Identification and Morph-metric Characterization of Powdery Mildew Infecting Diverse Host Plants of Southern Gujarat, India

Anusha Mahendra Nayak *

Department of Plant Pathology, NAU, Navsari, Gujarat-396445, India.

Priya John

Department of Plant Pathology, NAU, Navsari, Gujarat-396445, India.

Siddu lakshmi Prasanna

Department of Plant Pathology, NAU, Navsari, Gujarat-396445, India.

Farooqkhan

Department of Plant pathology, UAS, GKVK, Bangalore, Karnataka-560065, India.

Pooja Rajendra Dhange

Department of Horticulture, UAS, GKVK, Bengaluru 560065, India.

*Author to whom correspondence should be addressed.


Abstract

Powdery mildews are obligate biotrophic fungal pathogens that are responsible for disease on a wide range of host plants with white powdery patches on plant parts. An exhaustive survey in the Navsari region of south Gujarat was carried out to identify white powdery/floury circular to irregular spots, specks or patches either on the upper surface or lower surface or both the surface of the leaves. These powdery mildew symptoms were observed on leaves, stems and pods/fruits on 39 hosts of 22 families. For precise identification of the pathogen the morphological characteristics included mycelium, length and breadth of conidia, conidiophores, appressorium, conidial germ tubes foot cell and fibrosin bodies. Majorly the genera like Erysiphe, Golovinomyces, Leveillula, Oidium, Phyllactinia, Podosphaera, Micro-oidium and Sphaerotheca were found on different hosts in this region. The maximum number of hosts were infected by the genus Oidium followed by Erysiphe. The highest percent disease incidence was observed on the asthma plant, black gram, green gram and wild poinsettia between 75-100 per cent out of all the hosts.

Keywords: Powdery mildew, host range, per cent disease incidence


How to Cite

Nayak , A. M., John , P., Prasanna , S. lakshmi, Farooqkhan, & Dhange , P. R. (2023). Identification and Morph-metric Characterization of Powdery Mildew Infecting Diverse Host Plants of Southern Gujarat, India. International Journal of Plant & Soil Science, 35(20), 153–166. https://doi.org/10.9734/ijpss/2023/v35i203795

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References

Gautam AK. Studies on some powdery mildews from Himachal Pradesh, India. Australasian Mycologist. 2015;32:10-3.

Pawar VP, Patil VA. Occurrence of powdery mildew on some wild plants from Khandesh region of Maharashtra state. Recent Research in Science and Technology. 2011;3(5):94-5.

Braun U. Taxonomic manual of Erysiphales (powdery mildews). CBS Biodiversity series. 2012;11.

Pap P, Ranković B, Masirevic S. Effect of temperature, relative humidity and light on conidial germination of oak powdery mildew (Microsphaera alphitoides Griff. et Maubl.) under controlled conditions.

Sharma JK. Occurrence, epidemiology and management of powdery mildew of okra (Abelmoschus esculentus (L.) Moench) under South Gujarat conditions (Doctoral Dissertation, Plant Pathology Dept., N. M. College of Agriculture, Navsari Agricultural University, Navsari). 2016

Karuna K, Shadakshari YG, Jagadish KS, Geetha KN. Conidial size of Erysiphe cichoracearum as influenced by the host in sunflower. Plant Disease Research. 2014; 29(2):139-142.

Wheeler BE. An introduction to plant diseases. An introduction to plant diseases; 1969.

Dorneles KR, Dallagnol LJ, Brunetto AE, Pazdiora PC. First report of powdery mildew caused by Podosphaera xanthii on Lagenaria siceraria in Brazil. Plant Disease. 2018 Apr 16;102(4):823.

Choi IY, Choi YJ, Shin HD. First report of powdery mildew caused by Erysiphe glycines on Hylodesmum podocarpum in Korea. Journal of Plant Pathology. 2020 Aug;102:911-.

Kumar S, Singh D, Yadav SP, Prasad R. Studies on powdery mildew of rapeseed-mustard (Brassica juncea L.) caused by Erysiphe cruciferarum and its management. J Pure Appl Microbiol. 2015;9(2):1481-6.

Korra T, Kumar VM. Survey for the Occurrence of Powdery Mildew and It’s Effect of Weather Factors on Severity of Powdery Mildew in Guntur District. Int. J. Curr. Microbiol. App. Sci. 2018;7(11):949-64.

Bankar P, Kadam V, Bhosale A, Shitole S, Wagh S, Chandankar S, Chitale R, Kanade MB. Powdery Mildew Fungi from Phaltan Area of Satara District, Maharashtra. Int J Curr Microbiol App Sci. 2019;8(7):2181-6.

Thite SV, Kore BA, Camacho-Tapia M, Tovar-Pedraza JM. First report of Podosphaera xanthii causing powdery mildew on Xanthium strumarium in India. Journal of Plant Pathology. 2018 Apr 1;100(1):129-.

Shahare NH. Diversity of Powdery Mildew Fungi on Some Local Plants. IOSR J. Environ. Sci., Toxicol. Food Technol. 2016;10:44-5.

Monir S, Mandal NC. A review on powdery mildew of mulberry and its management. Int. J. Bio-res. Env. Agril. Sci; 2016.

Nayak AK, Babu BK. First report of powdery mildew caused by Podosphaera fusca on Euphorbia hirta in Odisha state, India. Journal of Plant Pathology. 2019 Feb 15;101:191-.

Liu WA, Kirschner R. First report of powdery mildew caused by Podosphaera xanthii on wild bitter gourd in Taiwan. Plant Disease. 2015 May 1;9:726.

Mulpuri S, Soni PK, Gonela SK. Morphological and molecular characterization of powdery mildew on sunflower (Helianthus annuus L.), alternate hosts and weeds commonly found in and around sunflower fields in India. Phytoparasitica. 2016;44(3): 353-67.