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Journal articles on the topic 'Leafless orchid'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Herdman, Adam R., Ernesto B. Mújica, Mark W. Danaher, Lawrence W. Zettler, Kurt Schulz, and Elizabeth Esselman. "Initial Population Analysis and Mycorrhizal Fungi of the Leafless Epiphytic Orchid, Campylocentrum pachyrrhizum, in Florida." Diversity 15, no. 4 (2023): 576. http://dx.doi.org/10.3390/d15040576.

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Campylocentrum pachyrrhizum Rchb.f. Rolfe, also known as the ribbon orchid, is native to southern Florida, the West Indies, and northern South America. In Florida, it is restricted to the Fakahatchee Strand and is currently state-listed as endangered, but virtually nothing is known about the orchid’s biology, ecology, and current status. The purpose of this study was to document ribbon orchid populations within the northern portion of the Fakahatchee Strand (Florida Panther NWR) and to identify some of the biotic and abiotic factors critical to its survival. During 2016–2022, a total of 118 ri

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2

Li, Ming-He, Ke-Wei Liu, Zhen Li, et al. "Genomes of leafy and leafless Platanthera orchids illuminate the evolution of mycoheterotrophy." Nature Plants 8, no. 4 (2022): 373–88. http://dx.doi.org/10.1038/s41477-022-01127-9.

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AbstractTo improve our understanding of the origin and evolution of mycoheterotrophic plants, we here present the chromosome-scale genome assemblies of two sibling orchid species: partially mycoheterotrophic Platanthera zijinensis and holomycoheterotrophic Platanthera guangdongensis. Comparative analysis shows that mycoheterotrophy is associated with increased substitution rates and gene loss, and the deletion of most photoreceptor genes and auxin transporter genes might be linked to the unique phenotypes of fully mycoheterotrophic orchids. Conversely, trehalase genes that catalyse the convers

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3

Zhou, Zhuang, Jinliao Chen, Fei Wang, et al. "The Complete Chloroplast Genome of an Epiphytic Leafless Orchid, Taeniophyllum complanatum: Comparative Analysis and Phylogenetic Relationships." Horticulturae 10, no. 6 (2024): 660. http://dx.doi.org/10.3390/horticulturae10060660.

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Taeniophyllum is a distinct taxon of epiphytic leafless plants in the subtribe Aeridinae of Orchidaceae. The differences in chloroplast genomes between extremely degraded epiphytic leafless orchids and other leafy orchids, as well as their origins and evolution, raise intriguing questions. Therefore, we report the chloroplast genome sequence of Taeniophyllum complanatum, including an extensive comparative analysis with other types of leafless orchids. The chloroplast genome of T. complanatum exhibited a typical quadripartite structure, and its overall structure and gene content were relatively

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4

Suetsugu, Kenji, Tamihisa Ohta, and Ichiro Tayasu. "Partial mycoheterotrophy in the leafless orchid Cymbidium macrorhizon." American Journal of Botany 105, no. 9 (2018): 1595–600. http://dx.doi.org/10.1002/ajb2.1142.

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5

Suetsugu, Kenji. "Cremastra saprophytica (Orchidaceae: Epidendroideae), a new leafless autonomously self-pollinating orchid species from Gifu Prefecture, Japan." Phytotaxa 527, no. 2 (2021): 89–96. https://doi.org/10.11646/phytotaxa.527.2.1.

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Suetsugu, Kenji (2021): Cremastra saprophytica (Orchidaceae: Epidendroideae), a new leafless autonomously self-pollinating orchid species from Gifu Prefecture, Japan. Phytotaxa 527 (2): 89-96, DOI: 10.11646/phytotaxa.527.2.1

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6

Roth-Nebelsick, Anita, Mike Thiv, Yaron Malkowsky, Rena Schott, and Arnd Heyer. "Structure and functional anatomy of the gas exchange apparatus of leafless orchids: evidence for a control mechanism?" Botanical Journal of the Linnean Society 197, no. 2 (2021): 249–62. http://dx.doi.org/10.1093/botlinnean/boab021.

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Abstract It is assumed that special structures in aerial roots of leafless orchids, aeration units, are involved in gas exchange regulation. In this study, the structure of aeration units in three leafless taxa (Microcoelia exilis, M. aphylla, Dendrophylax funalis) and a leaf-bearing species (Campylocentrum micranthum) are investigated to obtain more evidence of a possible mechanism for gas exchange control in aerial orchid roots. Extensive analyses of the anatomy of the velamen radicum, exodermis and cortex were performed using light and electron microscopy and µCT. In all considered leafless

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7

Metusala, Destario. "A new species of genus Chiloschista (Aeridinae, Vandeae, Epidendroideae, Orchidaceae) from Sumatra Island, Indonesia." PhytoKeys 252 (February 12, 2025): 65–76. https://doi.org/10.3897/phytokeys.252.138190.

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<i>Chiloschista tjiasmantoi</i>, a new species of epiphytic leafless orchid from the northernmost region of Sumatra Island, Indonesia, is described and illustrated. The flower of this new species is morphologically close to <i>C. javanica</i>, but differs in having oblong-obovate petals, narrowly oblique oblong side lobes with truncate to obtuse apex, and a different shape of lip sac.

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8

Vo, Doan Trung, Leonid Averyanov, Tatiana Maisak, et al. "Chiloschista quangdangii, a new leafless orchid (Orchidaceae) from northern Vietnam." Phytotaxa 606, no. 1 (2023): 79–84. https://doi.org/10.11646/phytotaxa.606.1.8.

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Vo, Doan Trung, Averyanov, Leonid, Maisak, Tatiana, Canh, Nguyen Van, Dang, Minh Quan, Dang, Van Son, Truong, Quang Tam, Vuong, Truong Ba (2023): Chiloschista quangdangii, a new leafless orchid (Orchidaceae) from northern Vietnam. Phytotaxa 606 (1): 79-84, DOI: 10.11646/phytotaxa.606.1.8, URL: http://dx.doi.org/10.11646/phytotaxa.606.1.8

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9

VO, DOAN TRUNG, LEONID AVERYANOV, TATIANA MAISAK, et al. "Chiloschista quangdangii, a new leafless orchid (Orchidaceae) from northern Vietnam." Phytotaxa 606, no. 1 (2023): 79–84. http://dx.doi.org/10.11646/phytotaxa.606.1.8.

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A newly discovered species belonging to the genus Chiloschista has been found in the Northern region of Vietnam, specifically in Ha Giang Province. This species is being described as a novel addition to scientific knowledge. It shares similarities in plant habit and flower color scheme with C. parishii and C. glabrisepala. However, it can be distinguished by its narrowly saccate spur-like lip, which features a small knob-like farinose callus that is significantly smaller than the median lip lobe. In contrast, C. parishii and C. glabrisepala possess a cup-shaped lip with a large central callus

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10

Kobayashi, Koichi, Kenji Suetsugu, and Hajime Wada. "The Leafless Orchid Cymbidium macrorhizon Performs Photosynthesis in the Pericarp during the Fruiting Season." Plant and Cell Physiology 62, no. 3 (2021): 472–81. http://dx.doi.org/10.1093/pcp/pcab006.

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Abstract Photosynthesis with highly photoreactive chlorophyll (Chl) provides energy for plant growth but with simultaneous risk of photooxidative damage and photoprotection costs. Although the leafless orchid Cymbidium macrorhizon mostly depends on mycorrhizal fungi for carbon, it accumulates Chl particularly during fruiting and may not be fully mycoheterotrophic. In fact, stable isotopic analysis suggested that the fruiting C. macrorhizon specimens obtain a significant proportion of its carbon demands through photosynthesis. However, actual photosynthetic characteristics of this leafless orch

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11

Dang, Minh Quan, Leonid V. Averyanov, Tatiana V. Maisak, et al. "Chiloschista eckhardii (Orchidaceae, Aeridinae), a new miniature leafless orchid from northern Vietnam." Phytotaxa 664, no. 2 (2024): 139–45. https://doi.org/10.11646/phytotaxa.664.2.6.

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Dang, Minh Quan, Averyanov, Leonid V., Maisak, Tatiana V., Wook, Um Sung, Canh, Nguyen Van, Phan, Xuan Thuy, Truong, Quang Tam, Wojtas, K. Philip, Truong, Ba Vuong (2024): Chiloschista eckhardii (Orchidaceae, Aeridinae), a new miniature leafless orchid from northern Vietnam. Phytotaxa 664 (2): 139-145, DOI: 10.11646/phytotaxa.664.2.6, URL: https://doi.org/10.11646/phytotaxa.664.2.6

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12

Metusala, Destario. "A new species of genus Chiloschista (Aeridinae, Vandeae, Epidendroideae, Orchidaceae) from Sumatra Island, Indonesia." PhytoKeys 252 (February 12, 2025): 65–76. https://doi.org/10.3897/phytokeys.252.138190.

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Chiloschista tjiasmantoi, a new species of epiphytic leafless orchid from the northernmost region of Sumatra Island, Indonesia, is described and illustrated. The flower of this new species is morphologically close to C. javanica, but differs in having oblong-obovate petals, narrowly oblique oblong side lobes with truncate to obtuse apex, and a different shape of lip sac.

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13

Zelmer, Carla D., and R. S. Currah. "Evidence for a fungal liaison between Corallorhiza trifida (Orchidaceae) and Pinus contorta (Pinaceae)." Canadian Journal of Botany 73, no. 6 (1995): 862–66. http://dx.doi.org/10.1139/b95-094.

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Corallorhiza trifida Châtelain, or pale coral root orchid, is a heterotrophic, leafless, rootless, terrestrial orchid with a circumboreal distribution. Because of its relative inability to photosynthesize, the orchid obtains energy through the digestion of fungal hyphae that grow within the cells of its contorted, yellowish, coralloid rhizomes. Recently, we isolated and cultured strains of a slow-growing basidiomycete with bright yellow, clamped hyphae that are typical of the fungal cells present in C. trifida endomycorrhizas from different treed habitats at widely distributed locations in the

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14

DANG, MINH QUAN, LEONID V. AVERYANOV, TATIANA V. MAISAK, et al. "Chiloschista eckhardii (Orchidaceae, Aeridinae), a new miniature leafless orchid from northern Vietnam." Phytotaxa 664, no. 2 (2024): 139–45. http://dx.doi.org/10.11646/phytotaxa.664.2.6.

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Chiloschista eckhardii, discovered recently in Ha Giang Province of northern Vietnam, is described as a new species to science. The newly discovered species belongs to group of plants having yellow sepals and petals spotted with dark brown marks. Our newly identified species may be misidentified as C. glabrisepala, C. parishii, or C. quangdangii, which share a similar hairy band on the central callus of the lip, whereas this feature is glabrous in other related species. The new species differs from the similar species mentioned in having a callus that is slightly shorter than the median lobe a

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15

Andriamihaja, Cathucia F., Aro V. Ramarosandratana, Michel Grisoni, Vololoniaina Jeannoda, and Pascale Besse. "The Leafless Vanilla Species-Complex from the South-West Indian Ocean Region: A Taxonomic Puzzle and a Model for Orchid Evolution and Conservation Research." Diversity 12, no. 12 (2020): 443. http://dx.doi.org/10.3390/d12120443.

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The pantropical genus Vanilla is a member of the Orchidaceae family, one of the largest and most diverse families of angiosperms in the world. It originated in America and differentiated in America, Africa, and Asia. About 132 species of Vanilla have now been accepted since the discovery of the genus. Within the Vanilla genus, leaflessness has appeared at least three independent times, in Africa, Asia, and America as an adaptation to drought conditions. The South-West Indian Ocean (SWIO) region, a biodiversity hotspot for orchids, is home to seven leafless species. Chloroplast markers failed t

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16

de Lacey, Claire, Stephen Bell, Steven Chamberlain, and Karl Bossard. "Habitat of the leafless tongue orchid ('Cryptostylis hunteriana') throughout its known Australian distribution." Australasian Plant Conservation: journal of the Australian Network for Plant Conservation 20, no. 4 (2012): 23–25. http://dx.doi.org/10.5962/p.373437.

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17

Winter), Klaus, Ernesto Medina, Victor Garcia, Maria Luisa Mayoral, and Raphael Muniz. "Crassulacean Acid Metabolism in Roots of a Leafless Orchid, Campylocentrum tyrridion Garay & Dunsterv." Journal of Plant Physiology 118, no. 1 (1985): 73–78. http://dx.doi.org/10.1016/s0176-1617(85)80166-8.

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18

SUETSUGU, KENJI. "Cremastra saprophytica (Orchidaceae: Epidendroideae), a new leafless autonomously self-pollinating orchid species from Gifu Prefecture, Japan." Phytotaxa 527, no. 2 (2021): 89–96. http://dx.doi.org/10.11646/phytotaxa.527.2.1.

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A new species of Cremastra (Orchidaceae), C. saprophytica, is described from Gifu Prefecture, Japan. The new species is similar to C. aphylla in having a leafless and mycoheterotrophic habit. However, it is distinguishable from C. aphylla by its green stem, more closed perianth tube, smaller lateral lobes of lip, smaller callus of lip positioned at base of the midlobe and absence of a rostellum and viscidium. An illustration and ecological information on the new species are provided. A key to the Cremastra species is also provided.

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19

CHEN, BING-HUA, and XIAO-HUA JIN. "Platanthera fujianense (Orchidaceae, Orchideae), a putatively holomycotrophic orchid from eastern China." Phytotaxa 286, no. 2 (2016): 116. http://dx.doi.org/10.11646/phytotaxa.286.2.6.

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Platanthera consists about 150–200 species and is among the largest terrestrial orchid genera; it is distributed across Asia, North America and Europe with a few species extending into North Africa and Central America (Bateman et al. 2003, 2009, Chase et al. 2015, Chen et al. 2009, Luer 1975, Pearce & Cribb 2002, Pridgeon et al. 2001, Lang 1999, Efimov 2016, Raskoti et al. 2016). There are about 50 species of Platanthera in China, out of which 25 species are endemic (Lang 1999, Chen et al. 2009, Jin et al. 2012, 2013,2014,2015, Efimov 2016). During fieldwork in eastern China, a leafless bu

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20

Mújica, Ernesto B., Adam R. Herdman, Mark W. Danaher, Elaine H. González, and Lawrence W. Zettler. "Projected Status of the Ghost Orchid (Dendrophylax lindenii) in Florida during the Next Decade Based on Temporal Dynamic Studies Spanning Six Years." Plants 10, no. 8 (2021): 1579. http://dx.doi.org/10.3390/plants10081579.

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The enigmatic ghost orchid, Dendrophylax lindenii (Lindley) Bentham ex Rolfe, is a showy leafless epiphyte restricted to low-lying forests in south Florida and western Cuba. Because of its appeal and reputation for being difficult to cultivate, D. lindenii remains vulnerable to poaching and environmental changes. About 2000 individuals are assumed to remain in Florida, most confined within water-filled cypress domes in the Fakahatchee Strand, but virtually no information exists on current population numbers throughout the region. This paper provides a preliminary summary of the ghost orchid’s

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21

Barrett, Craig F., Brandon T. Sinn, and Aaron H. Kennedy. "Unprecedented Parallel Photosynthetic Losses in a Heterotrophic Orchid Genus." Molecular Biology and Evolution 36, no. 9 (2019): 1884–901. http://dx.doi.org/10.1093/molbev/msz111.

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AbstractHeterotrophic plants are evolutionary experiments in genomic, morphological, and physiological change. Yet, genomic sampling gaps exist among independently derived heterotrophic lineages, leaving unanswered questions about the process of genome modification. Here, we have sequenced complete plastid genomes for all species of the leafless orchid genus Hexalectris, including multiple individuals for most, and leafy relatives Basiphyllaea and Bletia. Our objectives are to determine the number of independent losses of photosynthesis and to test hypotheses on the process of genome degradati

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Chomicki, Guillaume, Luc P. R. Bidel, and Christian Jay-Allemand. "Exodermis structure controls fungal invasion in the leafless epiphytic orchid Dendrophylax lindenii (Lindl.) Benth. ex Rolfe." Flora - Morphology, Distribution, Functional Ecology of Plants 209, no. 2 (2014): 88–94. http://dx.doi.org/10.1016/j.flora.2014.01.001.

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23

Verma, Jagdeep, Kranti Thakur, and S. P. Vij. "On the occurrence of an interesting leafless orchid Neottia listeroides Lindl. in Himachal Pradesh, northwestern Himalaya, India." Journal of Threatened Taxa 5, no. 11 (2013): 4601–3. http://dx.doi.org/10.11609/jott.o2828.4601-3.

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YE, QIN-LIANG, YU-FENG LI, ZHI-MING ZHONG, LIN-FANG WU, LI-JUN CHEN, and MING-HE LI. "Platanthera guangdongensis and P. zijinensis (Orchidaceae: Orchideae), two new species from China: Evidence from morphological and molecular analyses." Phytotaxa 343, no. 3 (2018): 201. http://dx.doi.org/10.11646/phytotaxa.343.3.1.

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Two new Platanthera (Orchidinae, Orchideae, Orchidoideae) species, P. guangdongensis and P. zijinensis, from the Guangdong Province in China are described and illustrated based on morphological and molecular analyses. Platanthera guangdongensis is leafless and resembles P. fujianensis, but it differs in terms of the shorter and/or smaller inflorescence, floral bract, dorsal sepal, lateral sepal, petal, and ligulate lip. Platanthera zijinensis is morphologically similar to P. minor, but it differs by the ovate-oblong to ovate floral bract, colour of flower, ovate dorsal sepal, oblong lateral se

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Martos, Florent, Steven D. Johnson, and Benny Bytebier. "Gastrodia madagascariensis (Gastrodieae, Orchidaceae): from an historical designation to a description of a new species from Madagascar." Phytotaxa 221, no. 1 (2015): 48. http://dx.doi.org/10.11646/phytotaxa.221.1.4.

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Gastrodia madagascariensis, a leafless achlorophyllous orchid, is described and illustrated here. The epithet was originally coined by Perrier de la Bâthie in 1939 for fruiting material found on the eastern coastal plain of Madagascar more than a century ago, but the name was never validly published. This new species is closely related to G. similis from Reunion Island, from which it can be distinguished by the perianth tube spreading towards the apex, the shape of the column and stigma, and the flower colour. The achlorophyllous genus Gastrodia currently comprises five species in the tropical

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KHANAL, MADHUSUDHAN, VEERESH HUCHAPPA ARI, PAKGAM NGULOM LENDO, et al. "Phalaenopsis quadridentata (Orchidaceae: Epidendroideae), a new orchid species from Arunachal Pradesh, India." Phytotaxa 704, no. 2 (2025): 196–202. https://doi.org/10.11646/phytotaxa.704.2.7.

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Phalaenopsis quadridentata is described as a new species from Arunachal Pradesh, India. Morphologically, this species looks similar to, Phalaenopsis mirabilis and Phalaenopsis putaoensis. However, the new species is a leafy plant bearing up to 4 flowers; sepals and petals bent backwards; labellum almost cochleate with ovate to elliptic midlobe, midrib not prominent, margin entire and ovate apex; lateral lobes of the labellum triangular, raised and arched above convergently with tips touching each other; 4 tooth-like triangular appendages at the junction of labellum and column, conical spur wit

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27

Freudenstein, John V., and Craig F. Barrett. "Fungal host utilization helps circumscribe leafless Coralroot orchid species: An integrative analysis of Corallorhiza odontorhiza and C. wisteriana." Taxon 63, no. 4 (2014): 759–72. http://dx.doi.org/10.12705/634.3.

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Rammitsu, Kento, Takahiro Yagame, Yumi Yamashita, Tomohisa Yukawa, Shiro Isshiki, and Yuki Ogura-Tsujita. "A leafless epiphytic orchid, Taeniophyllum glandulosum Blume (Orchidaceae), is specifically associated with the Ceratobasidiaceae family of basidiomycetous fungi." Mycorrhiza 29, no. 2 (2019): 159–66. http://dx.doi.org/10.1007/s00572-019-00881-7.

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29

Li, Xiaoling, Mengqing Zhe, Yiwei Huang, Weishu Fan, Junbo Yang, and Andan Zhu. "The Evolution of Mitochondrial Genomes between Two Cymbidium Sister Species: Dozens of Circular Chromosomes and the Maintenance and Deterioration of Genome Synteny." Genes 14, no. 4 (2023): 864. http://dx.doi.org/10.3390/genes14040864.

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Plant mitochondrial genomes (mitogenomes) exhibit fluid genome architectures, which could lead to the rapid erosion of genome synteny over a short evolutionary time scale. Among the species-rich orchid family, the leafy Cymbidium lancifolium and leafless Cymbidium macrorhizon are sister species with remarkable differences in morphology and nutritional physiology. Although our understanding of the evolution of mitochondria is incomplete, these sister taxa are ideal for examining this subject. In this study, the complete mitogenomes of C. lancifolium and C. macrorhizon, totaling 704,244 bp and 6

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Miller, Joseph T., and Mark A. Clements. "Molecular phylogenetic analyses of Drakaeinae: Diurideae (Orchidaceae) based on DNA sequences of the internal transcribed spacer region." Australian Systematic Botany 27, no. 1 (2014): 3. http://dx.doi.org/10.1071/sb13036.

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Results of the analysis of rDNA sequences based on 55 collections representative of 32 Drakaeinae orchid species and outgroups supported the monophyly of the subtribe, with weak support for the inclusion of Spiculaea, and revealed six strongly supported monophyletic, well defined morphological groups. Caleana is monophyletic. Chiloglottis s.lat. is monophyletic when Simpliglottis and Myrmechila are included. Our results also suggested that the segregate genus Phoringopsis is better treated as part of Arthrochilus.There is sufficient molecular and morphological support for recognition of the le

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Lee, Shiou Yih, Kaikai Meng, Haowei Wang, et al. "Severe Plastid Genome Size Reduction in a Mycoheterotrophic Orchid, Danxiaorchis singchiana, Reveals Heavy Gene Loss and Gene Relocations." Plants 9, no. 4 (2020): 521. http://dx.doi.org/10.3390/plants9040521.

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Danxiaorchis singchiana (Orchidaceae) is a leafless mycoheterotrophic orchid in the subfamily Epidendroideae. We sequenced the complete plastome of D. singchiana. The plastome has a reduced size of 87,931 bp, which includes a pair of inverted repeat (IR) regions of 13,762 bp each that are separated by a large single copy (LSC) region of 42,575 bp and a small single copy (SSC) region of 17,831 bp. When compared to its sister taxa, Cremastra appendiculata and Corallorhiza striata var. involuta, D. singchiana showed an inverted gene block in the LSC and SSC regions. A total of 61 genes were predi

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Yang, Haiying, Kaixiang He, Yapu Cao, et al. "Comparative transcriptome analysis of Armillaria gallica 012m in response to ethephon treatment." PeerJ 11 (January 17, 2023): e14714. http://dx.doi.org/10.7717/peerj.14714.

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Background Gastrodia elata, known as a rootless, leafless, achlorophyllous and fully mycoheterotrophic orchid, needs to establish symbionts with particular Armillaria species to acquire nutrition and energy. Previous research findings had approved that ethylene (ET) played an important role in plant-fungi interaction and some receptors of ET had been discovered in microorganisms. However, the molecular mechanisms underlying the role of ET in the interaction between G. elata and Armillaria species remain unknown. Methods Exiguous ethephon (ETH) was added to agar and liquid media to observe the

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Tsavkelova, Elena A., Irina D. Glukhareva, Elena A. Volynchikova, et al. "Cyanobacterial Root Associations of Leafless Epiphytic Orchids." Microorganisms 10, no. 5 (2022): 1006. http://dx.doi.org/10.3390/microorganisms10051006.

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The leafless orchids are rare epiphytic plants with extremely reduced leaves, and their aerial roots adopted for photosynthesis. The beneficial plant–microbial interactions contribute significantly to host nutrition, fitness, and growth. However, there are no data available on the bacterial associations, inhabiting leafless orchids. Here, we describe the diversity of cyanobacteria, which colonize the roots of greenhouse Microcoelia moreauae and Chiloschista parishii. The biodiversity and structure of the cyanobacterial community were analyzed using a complex approach, comprising traditional cu

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Wulandari, Fitriya Ayu, Dwi Sucianingtyas Sukamto, and Hanif Rafika Putri. "Characterization of Orchid Root Fungal Isolates as Leaflet Teaching Material to Improve Learning Outcomes of Grade X Vocational High School Students on the Subtopic of Kingdom Fungi." Jurnal Penelitian Pendidikan IPA 11, no. 5 (2025): 202–14. https://doi.org/10.29303/jppipa.v11i5.10934.

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This study aimed to identify mycorrhizal fungi, primarily from the genera Rhizoctonia and Tulasnella, on orchid roots and develop leaflet-based teaching materials using the Research and Development (R&D) model with the 4D approach (Define, Design, Develop, Disseminate). Fungal identification was conducted through microscopic examination and molecular techniques (ITS rDNA sequencing) to ensure accurate classification. The 4D model involved defining student needs, designing leaflet content focused on fungal symbiosis, developing draft materials, and disseminating the final leaflet for classr

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Bock, Clive H., Carolyn A. Young, Katherine L. Stevenson, and Nikki D. Charlton. "Fine-Scale Population Genetic Structure and Within-Tree Distribution of Mating Types of Venturia effusa, Cause of Pecan Scab in the United States." Phytopathology® 108, no. 11 (2018): 1326–36. http://dx.doi.org/10.1094/phyto-02-18-0068-r.

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Scab (caused by Venturia effusa) is the major disease of pecan in the southeastern United States. There is no information available on the fine-scale population genetic diversity or the occurrence of clonal types at small spatial scales that provides insight into inoculum sources and dispersal mechanisms, and potential opportunity for sexual reproduction. To investigate fine-scale genetic diversity, four trees of cultivar Wichita (populations) were sampled hierarchically: within each tree canopy, four approximately evenly spaced terminals (subpopulations) were selected and up to six leaflets (

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Belisario, A., E. Forti, L. Corazza, and H. A. van Kesteren. "First Report of Alternaria alternata Causing Leaf Spot on English Walnut." Plant Disease 83, no. 7 (1999): 696. http://dx.doi.org/10.1094/pdis.1999.83.7.696a.

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A foliar disease of English walnut (Juglans regia L.) was observed in 1998 in an orchard in northern Italy. Symptoms consisted of circular, necrotic spots bordered with concentric zones of darker tissue. Average lesion diameter was 20 mm, although lesions could extend to half of the leaflet lamina. A fungus identified as Alternaria alternata (Fr.:Fr.) Keissl. (1) was observed on the necrotic tissue and was consistently isolated from the margins of the necrosis. Conidia from leaves were brown, ellipsoid to ovoid (primary conidia 28 to 60 × 8 to 15 μm; secondary conidia 10 to 30 × 7 to 13 μm), w

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Freudenstein, John V., and Diana M. Senyo. "Relationships and evolution ofmatKin a group of leafless orchids (Corallorhizaand Corallorhizinae; Orchidaceae: Epidendroideae)." American Journal of Botany 95, no. 4 (2008): 498–505. http://dx.doi.org/10.3732/ajb.95.4.498.

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Hadas, E., M. Kölle, M. Karpina, and A. Borkowski. "IDENTIFICATION OF PEACH TREE TRUNKS FROM LASER SCANNING DATA OBTAINED WITH SMALL UNMANNED AERIAL SYSTEM." ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences V-2-2020 (August 3, 2020): 735–40. http://dx.doi.org/10.5194/isprs-annals-v-2-2020-735-2020.

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Abstract. Agricultural robotics rely on digital tools and sensor integration in order to improve efficiency and sustainability of cultivations. One part of orchard inventory is the identification of a tree trunk i.e. localization and diameter determination. However, this is a challenging task, due to thin trunks, presence of leaves and low branches. In this paper we present a case study for determining these parameters using the example of peach orchard, for which a high-density LiDAR data (over 3000 points/m2) was obtained with a small unmanned aerial system (UAS) during a leafy and leafless

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Mihail, J. D., R. L. McGraw, P. E. Verslues, and S. J. Taylor. "Episodic Dynamics of Tar Spot of Annual Lespedeza Within and Among Years." Plant Disease 81, no. 5 (1997): 535–40. http://dx.doi.org/10.1094/pdis.1997.81.5.535.

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The temporal and spatial dynamics of six tar spot epidemics were examined at two sites in mid-Missouri during 1990 to 1992. The sites, 48 km apart, differed in topography (flat versus slope), soil texture (silt loam versus silty-clay loam), and cropping history (orchard versus row crops). Temporal dynamics of disease incidence differed more among years than between sites. During 1990, temporal dynamics of the two epidemics followed a classic monotonic increase, whereas disease increase was episodic for the four epidemics observed during 1991 and 1992. Disease increase was associated with shadi

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Shapkalijevski, M., A. F. Moene, H. G. Ouwersloot, E. G. Patton, and J. Vilà-Guerau de Arellano. "Influence of Canopy Seasonal Changes on Turbulence Parameterization within the Roughness Sublayer over an Orchard Canopy." Journal of Applied Meteorology and Climatology 55, no. 6 (2016): 1391–407. http://dx.doi.org/10.1175/jamc-d-15-0205.1.

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Abstract In this observational study, the role of tree phenology on the atmospheric turbulence parameterization over 10-m-tall and relatively sparse deciduous vegetation is quantified. Observations from the Canopy Horizontal Array Turbulence Study (CHATS) field experiment are analyzed to establish the dependence of the turbulent exchange of momentum, heat, and moisture, as well as kinetic energy on canopy phenological evolution through widely used parameterization models based on 1) dimensionless gradients or 2) turbulent kinetic energy (TKE) in the roughness sublayer. Observed vertical turbul

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Wood, Bruce W., and A. Wilson White. "Influence of Disk Cultivation and Subsoiling on Productivity of a Mature Pecan Orchard." HortScience 21, no. 1 (1986): 66–68. http://dx.doi.org/10.21273/hortsci.21.1.66.

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Abstract One-time tillage treatments in a 70-year-old ‘Moneymaker’ pecan [Carya illinoensis (Wang.) K. Koch] orchard with traffic-induced soil compaction, showed nut yields to be increased by disk harrowing in comparison to the untilled check or subsoiling treatments. All tillage treatments increased soil pH in the surface soil, with leaflet Zn and Al levels declining and B levels increasing in tilled vs. nontilled treatments. Tillage had no influence on leaflet N, P, K, Ca, Mg, Fe, or Cu levels. Periodic disk harrowing appears to be a beneficial cultural practice for increasing nut yield in o

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Wood, Bruce W. "Ethephon and NAA Facilitate Early Harvesting of Pecans." Journal of the American Society for Horticultural Science 114, no. 2 (1989): 279–82. http://dx.doi.org/10.21273/jashs.114.2.279.

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Abstract In an attempt to solve the problems of nonuniform and delayed shuck dehiscense of pecan [Carya illinoensis (Wangenh.) C. Koch], ethephon and NAA were evaluated for their efficacy as harvest-aid treatments. A 3-year study under commercial-like orchard conditions using 75-year-old ‘Stuart’ trees resulted in a spray mixture of 9 mm ethephon and 1.5 or 3.0 mm NAA, or just 9 mm ethephon alone, accelerating shuck dehiscence by 1 to 2 weeks relative to that of the nontreated control. While all three treatments induced some degree of leaflet abscission, the two treatments employing the NAA an

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Wells, M. Leonard, and Bruce W. Wood. "Relationships between Leaflet Nitrogen: Potassium Ratio and Yield of Pecan." HortTechnology 17, no. 4 (2007): 473–79. http://dx.doi.org/10.21273/horttech.17.4.473.

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This study examines the relationship between foliar nitrogen:potassium (N:K) ratio and in-shell yield of pecan [Carya illinoinensis (Wangenh.) K.Koch]. Regression analysis of linear and curvilinear relationships between leaflet N:K ratio and in-shell yield identified associations relevant to orchard nutrition management. Analysis revealed that ON (heavy crop) year N:K ratio correlates with ON year yield (r2 = –0.69), OFF (light crop) year yield (r2 = +0.34), 2-year average yield (r2 = −0.52), and difference between ON and OFF year yields (r2 = –0.69) below the optimum yield level (less than 18

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Murad, H. J., and A. F. Al-Dulaimy. "Effects of Spraying with Urea and Seaweed Extract (Tecamin Algae) on Growth and Chemical Content of Date Palm Tree Cv. Zahdi." IOP Conference Series: Earth and Environmental Science 904, no. 1 (2021): 012065. http://dx.doi.org/10.1088/1755-1315/904/1/012065.

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Abstract The following study was conducted in a private date palm orchard in the area of AlFurat, district of Heet throughout the season of 2019-2020 on 20-year-old date palm trees, Zahdi cultivar. The purpose was to study the effects of spraying the Urea compound with concentrations of (0, 1 and 2 g L-1) as well as seaweed extract (Tecamin Algae) with (0, 2 and 4 g L-1) of concentration on the growth and chemical content of the trees. 27 date palms were randomly selected. A factorial experiment with RCBD design was carried out such that it includes 9 treatments with 3 replicas for each treatm

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Van Steenwyk, R. A., C. F. Fouche, J. A. Grant, L. C. Hendricks, W. H. Olson, and G. S. Sibbett. "Evaluation of Alternate Row Applications of A Short-Residue Insecticide for Control of the Overwintering Generation of Codling Moth, 1991." Insecticide and Acaricide Tests 17, no. 1 (1992): 74. http://dx.doi.org/10.1093/iat/17.1.74a.

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Abstract The trial was conducted in 5 commercial walnut orchards throughout California. In each orchard, there were 5 treatments. Each treatment was applied to an area of 2 or more acres. Timing of the treatments was based on walnut tree phenology; that is, applications were made at 1/2-inch nut size and at various time periods after V2-inch nut size. All materials were applied with an air-blast sprayer delivering from 100 to 150 gal finished spray/acre, depending on the site. The effectiveness of the treatments was evaluated by counting all CM-infested dropped nuts from around 6 trees in the

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Wood, Bruce W., Walker L. Tedders, and Charles C. Reilly. "Sooty Mold Fungus on Pecan Foliage Suppresses Light Penetration and Net Photosynthesis." HortScience 23, no. 5 (1988): 851–53. http://dx.doi.org/10.21273/hortsci.23.5.851.

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Abstract The heavy levels of sooty mold commonly present on pecan [Carya illinoensis (Wangenh.) C. Koch] foliage in the autumn prompted an evaluation of its influence on net photosynthesis (Pn) of pecan leaves. Extra heavy sooty mold levels were observed to block light penetration to the leaf surface by up to 98%. Heavy mold levels suppressed leaflet Pn by up to 70% with suppression due to a blockage of photosynthetically active radiation (PAR). An observed 4°C increase in abaxial leaf surface temperature may also contribute to this suppression. The results indicate a possible need to introduc

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Kumar, Vinod, Sant Ram Verma, Satendra Kumar Singh, Gaurav Singh Vishen, and Ankita Tiwari. "Morphological Diversity in Litchi Based on Tree and Leaf Characteristics." Journal of Experimental Agriculture International 46, no. 9 (2024): 1074–81. http://dx.doi.org/10.9734/jeai/2024/v46i92904.

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On the basis of tree and leaf characteristics, twenty litchi genotypes were evaluated to select promising genotypes. Numerous differences have been observed between the genotypes. The genotypes KT-1 and GC-2 recorded the highest (5.35 m) and lowest (4.50 m) height, respectively. The girth was greatest for the genotype KD-1 (63.01 cm) and lowest for the genotype GC-2 (49.99 cm). The genotype DP-2 had the smallest canopy diameter (5.29 m) and the genotype KS-1 the greatest (6.40 m) among the ones investigated. In GC-2 and KT-1, the plant volumes ranged from 20.35 m3 to 26.79 m3. Leaf exhibited a

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Wood, Bruce W. "Fruiting Affects Photosynthesis and Senescence of Pecan Leaves." Journal of the American Society for Horticultural Science 113, no. 3 (1988): 432–36. http://dx.doi.org/10.21273/jashs.113.3.432.

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Abstract Seasonal measurements of net photosynthesis (Pn), stomatal conductance (Cs), and endogenous senescence-related chemicals were made on pecan [Carya illinoensis (Wang.) C. Koch] trees growing in the orchard environment. Leaves from terminal shoots of mature, 75-year-old ‘Moneymaker’ trees in the “on” alternately bearing phase maintained 10% to 40% higher Pn rates than did those of “off” phase trees. These “on” leaves also maintained higher levels of chlorophyll, protein, amino acids, and RNA, but less K. than “off” leaves. The presence of developing fruit suppressed the rate of late sum

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Fauziah, Munaya, Aida Absari Akhyar, and Chusnul Desty Rizki. "Peningkatan Prilaku Hidup Bersih dan Sehat (PHBS) di Lingkungan Keluarga Wilayah Kerja Puskesmas Parigi." AS-SYIFA : Jurnal Pengabdian dan Pemberdayaan Kesehatan Masyarakat 4, no. 1 (2023): 77–84. https://doi.org/10.24853/assyifa.4.1.77-84.

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Perilaku Hidup Bersih dan Sehat (PHBS) adalah sekumpulan perilaku yang dilakukan atas kesadaran seseorang sehingga anggota keluarga atau keluarga tersebut dapat menolong dirinya sendiri di bidang kesehatan dan berperan aktif dalam kegiatan-kegiatan kesehatan di masyarakat (Depkes RI, 2011). Kegiatan ini diawali dengan mencari data terkait capaian indikator PHBS di Puskesmas Parigi. Untuk menunjang data yang sudah ada, dilakukan survey menggunakan kuisioner mengenai pengetahuan, sikap dan perilaku masyarakat tentang Kesehatan Ibu dan Anak. Survey ini dilakukan di Posyandu-posyandu yang ada di w

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Steenwyk, R. A. Van, C. F. Fouche, and B. Bisabri. "Control of Biomodal First Flight Codling Moth in Walnuts, 1992." Insecticide and Acaricide Tests 18, no. 1 (1993): 79–80. http://dx.doi.org/10.1093/iat/18.1.79a.

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Abstract The trial was conducted on ‘Serr’ walnuts in a commercial orchard near Arbuckle, Calif. Five treatments were replicated 3 times in a randomized complete block design. Each replicate consisted of 8 rows by 8 trees planted on a 30 ft. by 30 ft. spacing (1.32 acres). Treatments were applied with an air blast sprayer operating at 1.7 mph and delivering 50 gal/acre of finished spray. The first application was applied on 27 Apr, at the end of the first peak of the first CM flight (368 degree days [DD]). The second application was applied on 19 May, at the end of the second peak of the first

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