Terrestrial and epiphytic orchids exhibit different diversity and distribution patterns along an elevation gradient of Mt. Victoria, Myanmar

Ai, Yan-Yu; Liu, Qiang; Hu, Hai-Xia; Shen, Ting; Mo, Yu-Xuan; Wu, Xun-Feng; Li, Jinlong; Dossa, Gbadamassi G.O.; Song, Liang

doi:10.1016/j.gecco.2023.e02408

Cited by 3 publications

(4 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Following this pattern for Ecuador, Küper et al [39] showed a bell-shaped elevational pattern of orchid richness. However, other studies have found that orchid richness declined with elevation [40,41].…”

Section: Introductionmentioning

confidence: 83%

“…The experimental design corresponded to random sampling, where 3 plots of 0.1 ha each were established at 3 elevational zones from 1170 m to 1700 m a. s. l. (Figure 1), with an interval of 200 m [2,41]. Thus, we selected the lowest point and the highest point, and finally, an intermediate point to cover the different environments for orchid diversity.…”

Section: Plot Demarcation and Samplingmentioning

confidence: 99%

See 1 more Smart Citation

Orchid Diversity at Three Elevations in the Mountain Sandstone Plateaus of the Cordillera del CóndorEcuador

Vélez-Abarca,

Jiménez,

Ramírez-Iglesias

et al. 2023

Diversity

View full text Add to dashboard Cite

Orchids comprise one of the largest families of flowering plants and have important roles in the total biomass, water balance, and nutrient cycling of tropical ecosystems; however, they are also one of the most endangered plant taxa. Because their diversity is strongly coupled to environmental factors, we hypothesize that local elevation can affect the diversity of these organisms. The purpose of this research was to compare the orchid species diversity at 1200, 1400, and 1700 m of elevation, corresponding to a sandstone plateau of the Cordillera del Cóndor that hosts a great orchid diversity. For each elevation, three plots of 0.1 ha were established. Each plot was subdivided into 25 subplots, and 8 were randomly selected, wherein all orchid species were counted and identified. The results obtained revealed the existence of 119 species belonging to 54 genera and a total of 867 individuals. The greatest diversity of species was found at an elevation of 1700 with 63 species, followed by 1400 m with 52 species, with the least diversity at an elevation of 1200 m with 39 species. Orchid composition differed significantly among the three elevations related to more humidity at higher elevations (e.g., 1700 m). More importantly, twenty-one species were the best candidate indicators of environmental conditions (e.g., Maxillaria grayi, Elleanthus oliganthus, Maxillaria mapiriensis, Stelis pittieri, Stelis ortegae) in this region. We conclude that orchid communities in sandstone plateau forests in the Shagmi Range of the Cordillera del Cóndor are mainly limited by elevation.

show abstract

Section: Introductionmentioning

confidence: 83%

Section: Plot Demarcation and Samplingmentioning

confidence: 99%

Orchid Diversity at Three Elevations in the Mountain Sandstone Plateaus of the Cordillera del CóndorEcuador

Vélez-Abarca,

Jiménez,

Ramírez-Iglesias

et al. 2023

Diversity

View full text Add to dashboard Cite

show abstract

“…Faktor luar yang berpengaruh sangat besar diantaranya ialah berkurangnya habitat dan perubahan iklim yang berpengaruh pada penurunan populasinya secara langsung. Sementara faktor dari dalam adalah kompleksitas kebutuhan biologis anggrek yang secara obligat membutuhkan simbiosis mutualisme dengan cendawan pada fase awal kehidupannya sehingga membatasi distribusinya (Ai et al 2023). Phalaenopsis amabilis, Dipodium brevilabium, Vanilla planifolia, dan Aerides odorata dalam studi ini adalah anggrek alam yang merupakan bagian dari koleksi ilmiah Kebun Raya Bogor-Badan Riset dan Inovasi Nasional (BRIN), yang dimanfaatkan untuk kepentingan riset.…”

Section: Pendahuluanunclassified

Isolasi dan Identifikasi Cendawan Endofit Akar Anggrek Epifit dan Hemiepifit

Michael,

Sukarno,

Mursidawati

et al. 2023

JSDH

View full text Add to dashboard Cite

Orchids form a symbiotic relationship with endophytic fungi throughout their life cycle, including their seed germination. Research on orchid endophytic fungi in Indonesia is still limited. This study aimed to isolate and identify endophytic fungi of Phalaenopsis amabilis, Dipodium brevilabium, Vanilla planifolia, and Aerides odorata orchids. Endophytic fungi were isolated from surface-sterilized orchid root pelotons. Fungal identification was based on morphological and molecular characteristics using ITS rDNA sequences, followed by BLAST and phylogenetic tree analysis. All orchids studied had peloton structures in root cortex tissues. From the four orchids studied, 22 fungal isolates were obtained. Five fungal isolates were obtained from the P. amabilis orchid, consisting of 1 Penicillium and 4 sterile mycelium isolates. The D. brevilabium had 7 fungal isolates, namely 1 Penicillium and 6 Fusarium isolates. The V. planifolia had 6 Fusarium isolates, whereas the A. odorata had 4 isolates, such as 1 Penicillium, 2 sterile mycelium, and 1 unidentified isolate. The genus Penicillium was found in 3 out of the 4 orchid species studied. One Penicillium isolate was molecularly identified as Penicillium citrinum. Endophytic fungi in P. amabilis were mostly sterile mycelium, while D. brevilabium, V. planifolia, and A. odorata were dominated by Fusarium.

show abstract

“…Specific relationships may be formed to facilitate mycorrhizal relationships, but this too remains uncertain (Gowland et al 2013;Wagner et al 2015). For example, Ai et al (2023), in a study of orchids in Myanmar, identified 20 species of epiphytic orchids that appear to be associated with specific host tree species, although the mechanism for this association remains unclear. More common than obligate/exclusive relationships are records of orchid-host species bias or preference (Laube and Zotz 2006;Gowland et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Collateral damage: epiphytic orchids at risk from myrtle rust

Zimmer,

Clements,

Cooper

et al. 2023

Aust. J. Bot.

View full text Add to dashboard Cite

Epiphytic orchids rely on the habitat provided by their plant hosts to survive. The naturalisation of Austropuccinia psidii (G. Winter) Beenken (the causal agent for myrtle rust) in Australia means that some of these plant hosts, from the family Myrtaceae, are at risk of serious decline. We aimed to identify orchid species that associate with myrtaceous host plants and determine which, if any, might be susceptible to loss of habitat as a result of myrtle rust. We reviewed species descriptions and herbarium records and identified 73 epiphytic orchid species that are commonly found growing on myrtaceous hosts. At least seven orchid species are predominantly reliant on myrtaceous hosts, are distributed predominantly in the myrtle rust zone, and have host species that are highly or extremely susceptible to myrtle rust. Four of these orchid species are already listed as threatened. The impact of myrtle rust is broader than causing decline of Myrtaceae species, with knock-on effects on other biota, including epiphytic orchids. Moreover, there is the potential for further impact on these orchids through fragmentation (e.g. affecting pollination) and interactive effects with fire. Increased effort is required to identify the relative frequency of myrtaceous and non-myrtaceous hosts for these epiphytic orchid species, especially in relation to the compound effects of myrtle rust and other perturbations, such as fire and climate change. Where this is not possible, ex situ conservation may be required.

show abstract

Terrestrial and epiphytic orchids exhibit different diversity and distribution patterns along an elevation gradient of Mt. Victoria, Myanmar

Cited by 3 publications

References 67 publications

Orchid Diversity at Three Elevations in the Mountain Sandstone Plateaus of the Cordillera del CóndorEcuador

Orchid Diversity at Three Elevations in the Mountain Sandstone Plateaus of the Cordillera del CóndorEcuador

Isolasi dan Identifikasi Cendawan Endofit Akar Anggrek Epifit dan Hemiepifit

Collateral damage: epiphytic orchids at risk from myrtle rust

Contact Info

Product

Resources

About