Journal of Threatened Taxa |
www.threatenedtaxa.org | 26 August 2021 | 13(9): 19389–19390
ISSN 0974-7907 (Online) | ISSN 0974-7893
(Print)
https://doi.org/10.11609/jott.7001.13.9.19389-19390
#7001 | Received 16 December 2020 | Final
received 01 July 2021 | Finally accepted 17 July 2021
First report of Golovinomyces sp. causing powdery mildew
infection on Dyschoriste nagchana in Western Ghats of India
Sachin Vasantrao
Thite
Department of Botany, Karmaveer Bhaurao Patil Mahavidyalaya, Pandharpur (Autonomous)
District – Solapur,
Maharashtra 413304, India.
sachinthiteg4@gmail.com
Editor: Y.S. Paul, Palampur, Himachal
Pradesh, India. Date of publication: 26 August 2021
(online & print)
Citation: Thite, S.V. (2021). First report of Golovinomyces sp. causing powdery mildew infection
on Dyschoriste nagchana
in Western Ghats of India. Journal of Threatened Taxa 13(9): 19389–19390. https://doi.org/10.11609/jott.7001.13.9.19389-19390
Copyright: © Thite
2021. Creative Commons Attribution
4.0 International License. JoTT allows unrestricted use, reproduction, and
distribution of this article in any medium by providing adequate credit to the
author(s) and the source of publication.
Funding: None.
Competing interests: The author
declares no competing interests.
Acknowledgements: The authors would like to thank Prof.Uwe Braun for valuable guidance during paper writing.
Thanks are also due to Principal of College and HOD of Botany Department.
Dyschoriste nagchana
is a
perennial plant growing naturally in wet grassland, but quite often now found
in secondary bushland and grassland, including lawns. In January 2019, severe
powdery mildew infection was observed for the first time in the hills of
Western Ghats of district Satara, viz., Yavateshwar and Varoshi,
predominantly on the leaves and stem of D. nagchana
(Image 1a). Due to severe infection,
premature leaf fall was observed. The pathogen was observed in the anamorphic form only.
After collection and detailed
study diseased specimen was deposited in the Ajrekar
Mycological Herbarium (AMH 9659) housed at Agharkar
Research Institute, Pune, Maharashtra, India. The teleomorph (chasmothecia)
of this powdery mildew was not found. The anamorph is characterized as follows:
mycelium caulicolous and foliicolous,
amphigenous, thin-walled, effuse or thicker white
patches, persistent; hyphae colourless, hyphal appressoria solitary, always
nipple-shaped (Image 1f); conidiophores arising laterally and usually towards
one end of the hyphal mother cell, foot-cell curved, 48–55x 7–10 µm (Image 1d).
Conidia broadly ellipsoid doliiform without fibrosin bodies, 35x18
µm (Image 1b, c). Germ tubes terminal, short. Tips often with a swollen
appressorium (Image 1e). Based on these morphological characters the pathogen
is identified as Golovinomyces sp. (Euoidium sp).
A literature survey (Paul &
Thakur 2006; Hosagoudar & Agarwal 2009; Braun
& Cook 2012; Farr & Rossman 2016) reveal that no powdery mildew
infection has been reported on D. nagchana
from India and abroad. To our knowledge, this is the first report of Golovinomyces sp. (Euoidium
sp). on D. nagchana
from India.
References
Braun, U.
& R.A. Cook (2012). Taxonomic Manual of the Erysiphales
(Powdery Mildews). Fungal Biodiversity Centre (CBS BiodiversitySeries
No. 11), Utrecht, 707pp.
Farr, D.F. & A.Y. Rossman (2016).
Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA.
Retrieved 7 February 2016 from http://nt.ars-grin.gov/fungaldatabases/
Hosagoudar, V.B. & D. Agarwal (2009). Powdery Mildews of India -
Check List. Associated Publishing Company, New Delhi, 106pp.
Paul, Y.
& V. Thakur (2006). Indian Erysiphaceae. Scientific
Publishers, Jodhpur India, 134pp.