Cissus lombardiana a new name for Cissus ulmifolia (Vitaceae) RAMALINGAM KOTTAIMUTHU, MUTHURAMALINGAM JOTHI BASU, KULLAIYAN SATHIYADASH, VELUSWAMY KARTHIKEYAN Phytotaxa, 2020 Cissus Linnaeus (1753: 117) is the most speciose genus in the family Vitaceae and notable for its pantropical intercontinental disjunct pattern (Liu et al. 2013). According to the recent estimate, the genus is known to have 291 accepted species (POWO 2020) and it is widely distributed in tropical regions of Africa, Asia, Australia, Central and South America and Mexico (Wen 2007). The main characters delimiting Cissus from other Vitaceae genera are the well-developed, thick and undivided floral disks, tetramerous flowers, one-seeded berries, and seeds with a long and linear chalaza (Wen 2007). In South America, Cissus is represented by 64 species (Lombardi 2000, 2007, Rodrigues et al. 2014). Amongst C. ulmifolia (Baker 1871: 213) Planchon (1887: 552) that is a later homonym of an Italian fossil taxon Cissus ulmifolia Massalongo (1858: 80). While checking the literature and relevant websites for the availability of any synonyms, we found that C. allenii Croat (1977: 358) and C. serrulatifolia Williams (1962: 375) are listed as heterotypic synonyms of C. ulmifolia in Tropicos (2020) following Nelson (2010). However, C. allenii was synonymized under C. serrulatifolia by most of the workers (Govaerts 1999, Lombardi 2007, Morales 2015, POWO 2020, Raz & Zamora 2020) but C. ulmifolia was treated as a distinct species. So in order to ascertain the taxonomic status, we critically studied the protologues and digital specimens including types of these three species, we found that the characters of C. allenii are well within the range of C. serrulatifolia but C. ulmifolia differs from them by its 4-sided, distinctly winged stem (vs. stem terete, not winged or wingless in C. serrulatifolia) and the fruits ovoid or ovoid–subglobose, smooth (vs. obovoid or subpyriform, lenticellate in C. serrulatifolia). Since no other validly published legitimate name is available for this species (Lombardi 2007, Mota de Oliveira & Jansen-Jacobs 2016, POWO 2020), therefore, the authors propose Cissus lombardiana as a replacement name.
Arbuscular mycorrhizal and dark septate endophyte fungal associations in plants of different vegetation types in velliangiri hills of Western Ghats, Southern India T. Muthukumar, K. Sathiyadash, V. Valarmathi Acta Botanica Hungarica, 2018 In recent years more attention is being paid to the presence of various non-pathogenic root fungal associations in plants of natural ecosystems for their role in various ecosystem processes. Despite their widespread reports in various ecosystems worldwide, our knowledge on root endophyte fungal association in plants from natural vegetation is far from complete. We assessed the arbuscular mycorrhizal (AM) and dark septate endophyte (DSE) fungal association in plants of Velliangiri Hills of the southern Western Ghats region, due to limited information on the root fungal association in this region. Of the 147 plant taxa (belonging to 46 families) investigated from five different vegetation types ranging from montane grasslands to tropical rainforest, 141 were colonised by AM fungi and co-occurrence of DSE fungi along with AM fungi was observed in 74 plant taxa. We report AM and DSE fungal associations for the first time in 61 and 42 plant species, respectively. Determination of AM morphological types indicated the frequent occurrence of intermediate type and AM morphology is reported for the first time in 64 plant taxa. Spore morphotypes belonging to eleven species (in six genera) were isolated from the different vegetation types. Arbuscular mycorrhizal fungal spore numbers neither differed significantly among vegetation types nor were related to AM fungal colonisation. Spores of Funneliformis geosporum was the most frequent spore morphotypes. Dark septate endophyte fungal association occurred in plants of all the vegetation types and was most frequent in herbs. Though no significant relationship was found between AM and DSE fungal colonisation within roots, a positive association was found in the occurrence of these two fungal groups.
Arbuscular Mycorrhizal (AM) and Dark Septate Endophyte (DSE) fungal association in lycophytes and ferns of the Kolli Hills, Eastern Ghats, Southern India Raji Muthuraja, Thangavelu Muthukumar, Kullaiyan Sathiyadash, Eswaranpillai Uma, Perumalsamy Priyadharsini American Fern Journal, 2014 We examined the extent and type of arbuscular mycorrhizal (AM) and dark septate endophyte (DSE) fungal associations in three lycophyte and 44 fern species collected from three different sites in the Kolli Hills, Eastern Ghats, southern India. Of the 47 plant taxa (belonging to 21 families and 33 genera) examined, 46 had AM fungal and 33 had DSE fungal associations. But, fungal structures were absent in the aquatic fern Azolla pinnata (Azollaceae). This is the first report of AM and DSE fungal status for 16 and 28 species, respectively. Among terrestrial lycophytes and ferns, 26 species had dual association of both AM and DSE fungi, whereas 11 species had only AM fungal association. Vittaria elongata from epiphytic habitats had dual association of AM and DSE fungi. Likewise, Cheilanthes tenuifolia (saxicolous or terrestrial), Cheilanthes opposita, Lepisorus nudus, Pyrrosia lanceolata (terrestrial or epiphytic), and Asplenium lanceolatum (saxicolous or epiphytic) examined from different sites or habitats also had dual association of AM and DSE fungi. Seventy two percent of the mycorrhizal lycophytes and ferns had intermediate-type AM and 15 percent had both Paris- and intermediate-types at different sites. Significant variations in AM fungal structures were evident in 16 ferns occurring in two or more sites. Nine AM fungal spore morphotypes belonging to Acaulospora, Funneliformis, Glomus, Gigaspora, and Sclerocystis were found to be associated with lycophytes and ferns.
In vitro asymbiotic seed germination, mycorrhization and seedling development of Acampae praemorsa (Roxb.) Blatt. & Mc Cann, a common south Indian orchid Kullaiyan Sathiyadash, Thangavelu Muthukumar, Shanmugaraj Bala Murugan, Ramalingam Sathishkumar, Eswaranpillai Uma, Sarah Jaison, Perumalsamy Priyadharsini Asian Pacific Journal of Reproduction, 2013 To develope a conservation strategies for orchid species. Seeds of Acampae praemorsa (Roxb.) Blatt. Mc Cann (A. praemorsa) were obtained from mature pods collected from Velliangiri hills and germinated on Murashige and Skoog (MS) medium supplemented with various concentration of Benzylaminopurine (BAP). Maximum seed germination (85%) was observed on MS media supplemented with 2 mg/L BAP. Seed germination percentage increased with increasing concentrations of BAP (0.5 mg/L to 2 mg/L), but 3 mg/L of BAP inhibited seed germination. Variations observed were significantly (P<0.01) different for concentrations of growth regulators, days and their interactions. The embryos in the seeds swelled prior to germination. Fifty days after inoculation, well developed greenish porotocorm like bodies (PLBs) were formed and by 80th day, 85% (maximum) of the PLBs were observed in MS supplemented with 2 mg/L BAP. Eighty days after seed sowing, the germination rate decreased and the PLBs were transformed into first and second leaf stages in media supplemented with Naphthaleneacetic acid (NAA). Maximum seedling numbers (84%) were observed in MS medium supplemented with 1 mg/L NAA at 110th day. After 110 days, the seedlings were transferred to 0.6 g/L MS medium containing activated charcoal and similar concentration of growth regulators for root induction. After rooting, the seedlings were transferred to ex vitro conditions. In present study all the mycorrhizal seedlings survived, because orchid mycorrhizal fungi enhance growth of orchid plantlets and present study gives an effective protocol for seed germination and plantlet regeneration from immature seeds which can be used for establishing A. praemorsa populations in Velliangiri Hills and elsewhere.
Mycorrhizal association and morphology in orchids Kullaiyan Sathiyadash, Thangavelu Muthukumar, Eswaranpillai Uma, Radha Raman Pandey Journal of Plant Interactions, 2012 We investigated the mycorrhizal associations in 31 adult wild or cultivated green orchids (22 epiphytic, 8 terrestrial, and 1 species with both epiphytic and lithophytic life-forms) from different vegetation types of Western Ghats, southern India. All the orchids examined were mycorrhizal with the extent of colonization varying with species and life-forms. Mycorrhizal association has been reported for the first time in 25 orchids. The entry of mycorrhizal fungi into the roots was mostly through root hairs. In certain epiphytic species, the fungal entry was directly through the epidermis. The fungi formed highly coiled hyphal structures (pelotons) within the root cortex, and their size was related to the cell size. The fungal invasion of the cortical cells was through cell-to-cell penetration. The cortical cells contained intact and lysed pelotons, and their ratio varied with species and life-forms. No significant relationship existed between root hair characteristics and the extent of colonization. Chlamydospores and microsclerotia-like structure were frequently found within the cortical and root hair cells. The liberation of fungal reproductive structures was by spiral dehiscence of the root hairs.
Arbuscular mycorrhizal morphology in sporophyte of Psilotum nudum Phytomorphology an International Journal of Plant Morphology, 2009
RECENT SCHOLAR PUBLICATIONS
Nanomaterials Against Plant Pathogens: An Innovative Approach P Kavitha, K Rathinabala, P Anbinsoniya, K Sathiyadash, K Rajendran, ... Innovative Approaches in Diagnosis and Management of Crop Diseases, 45-65 , 2021 2021
Tropidia thwaitesii Hook. f.(Orchidaceae: Tropidieae): A Little Known Orchid from Eastern Ghats, India R Kottaimuthu, K Sathiyadash, V Karthikeyan, MJ Basu Indian Journal of Forestry 43 (2), 140-142 , 2021 2021
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ASYMBIOTIC SEED GERMINATION, MYCORRHIZATION AND SEEDLING DEVELOPMENT OF ACAMPAE PRAEMORSA (ROXB.) BLATT. & MC CANN, A COMMON SOUTH INDIAN ORCHID K Sathiyadash, T Muthukumar, S Bala Murugan, R Sathishkumar, E Uma, ... Elsevier-Asian Pacific Journal of Reproduction , 2013 2013
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MOST CITED SCHOLAR PUBLICATIONS
Mycorrhizal association and morphology in orchids K Sathiyadash, T Muthukumar, E Uma, RR Pandey Journal of Plant Interactions 7 (3), 238-247 , 2012 2012 Citations: 80
Orchid mycorrhizal fungi: structure, function, and diversity K Sathiyadash, T Muthukumar, V Karthikeyan, K Rajendran Orchid biology: recent trends & challenges, 239-280 , 2020 2020 Citations: 56
Arbuscular mycorrhizal and dark septate endophyte fungal associations in South Indian grasses K Sathiyadash, T Muthukumar, E Uma Symbiosis 52 (1), 21-32 , 2010 2010 Citations: 36
In vitro symbiotic seed germination of South Indian endemic orchid Coelogyne nervosa K Sathiyadash, T Muthukumar, SB Murugan, R Sathishkumar, RR Pandey Mycoscience 55 (3), 183-189 , 2014 2014 Citations: 33
Mycorrhizal and dark septate fungal associations in gingers and spiral gingers E Uma, T Muthukumar, K Sathiyadash, V Muniappan Botany 88 (5), 500-511 , 2010 2010 Citations: 30
Tree species as hosts for arbuscular mycorrhizal and dark septate endophyte fungi E Uma, K Sathiyadash, J Loganathan, T Muthukumar Journal of forestry research 23 (4), 641-649 , 2012 2012 Citations: 27
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Arbuscular mycorrhizal and dark septate endophyte fungal associations in ferns and lycophytes of Palni Hills, Western Ghats, southern India T Muthukumar, G Sathiyaraj, P Priyadharsini, E Uma, K Sathiyadash Brazilian Journal of Botany 37 (4), 561-581 , 2014 2014 Citations: 14
Morphology, anatomy and mycorrhizae in subterranean parts of Zeuxine gracilis (Orchidaceae)/Morfología, anatomía y micorrizas en las partes subterráneas de Zeuxine gracilis … T Muthukumar, E Uma, A Karthikeyan, K Sathiyadash, S Jaison, ... Anales de Biología, 127 , 2011 2011 Citations: 14
Modulation of plant micronutrient uptake by arbuscular mycorrhizal fungi K Sathiyadash, K Rajendran, V Karthikeyan, T Muthukumar Probiotics and plant health, 337-352 , 2017 2017 Citations: 10
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The mycorrhizal status of south Indian epiphytic orchids T Murugan, K Sathiyadash, V Muniappan, T Muthukumar The Journal of the Orchid Society of India 24, 29-33 , 2010 2010 Citations: 7
Mycorrhizal morphology of Nun's orchid [Phaius tankervilliae (Banks ex L'Herit.) Blume.]. T Muthukumar, K Sathiyadash Mycorrhiza News 21 (1) , 2009 2009 Citations: 7
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Habenaria multicaudata Sedgw.(Orchidaceae). A little known orchid from Alagar hills, Eastern Ghats, India R Kottaimuthu, K Sathiaydesh, V Karthikeyan, K Rajendra License The Author ( 19, 87-90 , 2018 2018 Citations: 2
Diversity of Arbuscular Mycorrhizal Fungi in Shola Forests of Kodaikanal, Southern India KSEEPU K Sathiyadash, Jaffer Ali Jabeen International Journal of Life science and Pharma Research 10 (4), 109 -116 , 2020 2020 Citations: 1
Nanomaterials Against Plant Pathogens: An Innovative Approach P Kavitha, K Rathinabala, P Anbinsoniya, K Sathiyadash, K Rajendran, ... Innovative Approaches in Diagnosis and Management of Crop Diseases, 45-65 , 2021 2021
Tropidia thwaitesii Hook. f.(Orchidaceae: Tropidieae): A Little Known Orchid from Eastern Ghats, India R Kottaimuthu, K Sathiyadash, V Karthikeyan, MJ Basu Indian Journal of Forestry 43 (2), 140-142 , 2021 2021
