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Agronomical, biochemical and histological response of resistant and susceptible wheat and barley under BYDV stress

Citation

Choudhury, S and Hu, H and Larkin, P and Meinke, H and Shabala, S and Ahmed, I and Zhou, M, Agronomical, biochemical and histological response of resistant and susceptible wheat and barley under BYDV stress, PeerJ, 6, (5) Article e483. ISSN 2167-8359 (2018) [Refereed Article]


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Copyright 2018 The Authors Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

DOI: doi:10.7717/peerj.4833

Abstract

Barley yellow dwarf virus-PAV (BYDV-PAV) is one of the major viruses causing a widespread and serious viral disease affecting cereal crops. To gain a better understanding of plant defence mechanisms of BYDV resistance genes (Bdv2 and RYd2) against BYDV-PAV infection, the differences in agronomical, biochemical and histological changes between susceptible and resistant wheat and barley cultivars were investigated. We found that root growth and total dry matter of susceptible cultivars showed greater reduction than that of resistant ones after infection. BYDV infected leaves in susceptible wheat and barley cultivars showed a significant reduction in photosynthetic pigments, an increase in the concentration of reducing sugar. The protein levels were also low in infected leaves. There was a significant increase in total phenol contents in resistant cultivars, which might reflect a protective mechanism of plants against virus infection. In phloem tissue, sieve elements (SE) and companion cells (CC) were severely damaged in susceptible cultivars after infection. It is suggested that restriction of viral movement in the phloem tissue and increased production of phenolic compounds may play a role in the resistance and defensive mechanisms of both Bdv2 and RYd2 against virus infection

Item Details

Item Type:Refereed Article
Keywords:virus infection, resistance genes, phloem, BYDV, phenol
Research Division:Agricultural and Veterinary Sciences
Research Group:Crop and Pasture Production
Research Field:Crop and Pasture Protection (Pests, Diseases and Weeds)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Winter Grains and Oilseeds
Objective Field:Barley
UTAS Author:Choudhury, S (Ms Sidratul Choudhury)
UTAS Author:Hu, H (Mr Hongliang Hu)
UTAS Author:Meinke, H (Professor Holger Meinke)
UTAS Author:Shabala, S (Professor Sergey Shabala)
UTAS Author:Ahmed, I (Mr Ibrahim Ahmed)
UTAS Author:Zhou, M (Professor Meixue Zhou)
ID Code:128650
Year Published:2018
Deposited By:TIA - Research Institute
Deposited On:2018-10-04
Last Modified:2019-03-21
Downloads:72 View Download Statistics

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