Journal of Threatened Taxa |
www.threatenedtaxa.org | 26 August 2020 | 12(11): 16644–16646
ISSN 0974-7907 (Online) | ISSN 0974-7893
(Print)
doi: https://doi.org/10.11609/jott.5981.12.11.16644-16646
#5981 | Received 11 April 2020 | Final
received 13 June 2020 | Finally accepted 09 August 2020
Puccinia duthiei Ellis & Tracy: a new host
record on Chrysopogon velutinus
from India
Suhas Kundlik
Kamble
Department of Botany, Dahiwadi College, Dahiwadi, Satara, Maharashtra 415508, India.
Editor: B. Shivaraju, Bengaluru, Karnataka, India. Date
of publication: 26 August 2020 (online & print)
Citation: Kamble, S.K. (2020). Puccinia duthiei Ellis & Tracy: a new host record on Chrysopogon velutinus from India.
Journal of Threatened Taxa 12(11): 16644–16646. https://doi.org/10.11609/jott.5981.12.11.16644-16646
Copyright: © Kamble 2020. 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: Author sincerely thankful to Principal Dr. M.M. Rajmane, Sadguru Gadage Maharaj College, Karad for providing common facilities. I express my
gratitude to Dr. G. G. Potdar
and Mr. Tarbej Shaikh, Y.C.C.S. Karad
for their help in identification of Chrysopogon velutinus. I would
like to pay my special thanks to Dr. Sachin Thite and Dr. Pavan Hande for their kind
suggestions.
Dicaeoma duthiei (Ellis & Tracy) Sydow
[as ‘duthiae’], Annls
mycol. 20(3/4):117 (1922)
Uredo duthiei (Ellis & Tracy) Pardo-Card. [as ‘duthiae’], Revista, Facultad Nacional de Agronomia
Medellin 56(2): 2080 (2003)
Chrysopogon (Trin.) belongs to (Family Poaceae) and is represented by 23 species in India (Sunil
et al. 2017). Rust disease is caused by pathogenic fungi of the
order Pucciniales, which comprises about 168
genera and approximately 7,000 species of rusts (Mohanan
2010). An attempt has been made to
establish new host record of rust fungus, Puccinia
duthiei (Ellis and Tracy, 1897) on Chrysopogon velutinus (Hook.f.) Bor from India.
The rust infected leaves of C. velutinus were collected on January 2018, from Surali Ghat in Karad Tehsil of Satara District,
(MS) India, situated at altitude of about 710m.
It is geographically located at 17.7380N & 74.4620E. The leaves with early, mature and late stages
of disease were examined and symptoms were noted (Image 1 a & b).
A number of
tiny, elevated, globulous to elongated, elliptic,
dark brown to yellowish-brown powdery rust pustules were noticed on lower surface
of leaves. Later on, these pustules
converted in to blackish color at maturity (Image
1c). With the help of razor, several
thin transverse sections passing through pustule were cut and taken on the
glass slide. The sections were stained
with cotton blue, mounted in lacto phenol and
observed under digital microscope (Olympus CX21Iledfs1). Microphotographs of different morphological
features were taken using the software Magvision
equipped with MIPS-3 MP Camera. With the
help of fine needle, scrape mount slides of urediniospores
and teliospores were prepared and dimensions of the same were measured by
software with an inbuilt tool in the system at different magnifications viz.,
10, 40 and 100 X (Image 1. d) & by using mm and µm scale under digital microscope.
A voucher specimen was deposited in Ajrekar Mycological Herbarium (AMH), MACS’ Agharkar Research Institute, Pune, India under the
accession number (AMH-10144).
Puccinia duthiei Ellis &
Tracy, 1897
Dicaeoma duthiei (Ellis & Tracy) Sydow
[as ‘duthiae’], Annls
mycol. 20(3/4):117 (1922)
Uredo duthiei (Ellis & Tracy) Pardo-Card. [as ‘duthiae’], Revista,
Facultad Nacional de Agronomia
Medellin 56(2): 2080 (2003)
Puccinia duthiei Ellis & Tracy
Rust pustules (infection spots) are rounded to elliptic, elongated,
hypophyllous, dark brown to yellowish-brown, about
0.16–0.67 mm. Urediniospores- oval,
echinulate, yellowish to brown, darker at apex, unicelled, 24.76–35.32 x
15.96–24.16 μm, wall- dark brown between 1.3–2.35 μm thick, germ pores, 4–6. Teliospores- unicelled to
bicelled, broadly ellipsoidal, dark yellow to
yellowish-brown, constricted near septa, up to 24.18–48.34 x 24.54– 28.30 µm,
thick walled 2.56–7.94 µm. Teliospore
stalk gradually increasing towards length, hyaline to light olivaceous,
aseptate, smooth walled, up to 97.71–114 x 5–6.75 µm.
Material examined: On living leaves of Chrysopogon
velutinus (Hook.f.) Bor (Poaceae), Karad, Satara (MS) India, January
2018, Type Duthie, on Andropogon pertusus (=Bothriochloa
pertusa (L.) A. Camus), Saharanpur, India (NY;
isotype PUR).
Discussion: P. chrysopogi (Barclay, 1889) was reported on Chrysopogon
echinulatus (Steud.) W.
Wats. and C. gryllus (L.) Trin.
from India by Cummins (1971). P. chrysopogi
was recently listed in fungal flora of Swat District in Pakistan (Usman et al.
2016). Puccinia duthiei
(Ellis & Tracy, 1897) was reported new to India on Dichanthium
foveolatum by Pawar et
al. (2018). The crucial review of
literature indicates that, there are previous evidences about incidence of P.
duthiei in India on another host. Therefore, it confirms new host record
of P. duthiae on Chrysopogon
velutinus from India.
References
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