Home About Browse Search
Svenska


Dynamics of bacterial blight disease in resistant and susceptible rice varieties

Niones, Jennifer T. and Sharp, Ryan T. and Donayre, Dindo King M. and Oreiro, Eula Gems and Milne, Alice E. and Oliva, Ricardo (2022). Dynamics of bacterial blight disease in resistant and susceptible rice varieties. European Journal of Plant Pathology. 163 :1 , 1-17
[Research article]

[img] PDF
2MB

Abstract

Bacterial blight (X. oryzae pv. oryzae) is a serious disease in rice across the world. To better control the disease, it is important to understand its epidemiology and how key aspects of this (e.g. infection efficiency, and spatial spread) change according to environment (e.g. local site conditions and season), management, and in particular, variety resistance. To explore this, we analysed data on the disease progress on resistant and susceptible varieties of rice grown at four sites in the Philippines across five seasons using a combination of mechanistic modelling and statistical analysis. Disease incidence was generally lower in the resistant variety. However, we found no evidence that the primary infection efficiency was lower in resistant varieties, suggesting that differences were largely due to reduced secondary spread. Despite secondary spread being attributed to splash dispersal which is exacerbated by wind and rain, the wetter sites of Pila and Victoria in south Luzon tended to have lower infection rates than the drier sites in central Luzon. Likewise, we found spread in the dry season can be substantial and should therefore not be ignored. In fact, we found site to be a greater determinant of the number of infection attempts suggesting that other environmental and management factors had greater effect on the disease than climate. Primary infection was characterised by spatially-random observations of disease incidence. As the season progressed, we observed an emerging short-range (1.6 m-4 m) spatial structure suggesting secondary spread was predominantly short-range, particularly where the resistant variety was grown.

Authors/Creators:Niones, Jennifer T. and Sharp, Ryan T. and Donayre, Dindo King M. and Oreiro, Eula Gems and Milne, Alice E. and Oliva, Ricardo
Title:Dynamics of bacterial blight disease in resistant and susceptible rice varieties
Series Name/Journal:European Journal of Plant Pathology
Year of publishing :2022
Volume:163
Number:1
Page range:1-17
Number of Pages:17
Publisher:SPRINGER
ISSN:0929-1873
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:Disease incidence, Epidemiological modelling, Primary infection, Spatial statistics, Spatial structure
URN:NBN:urn:nbn:se:slu:epsilon-p-115379
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-115379
Additional ID:
Type of IDID
DOI10.1007/s10658-021-02452-z
Web of Science (WoS)000739749500002
ID Code:27525
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Forest Mycology and Plant Pathology
(S) > Dept. of Forest Mycology and Plant Pathology
Deposited By: SLUpub Connector
Deposited On:11 Apr 2022 09:25
Metadata Last Modified:11 Apr 2022 09:31

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits