Yield components affected by rice black-streaked dwarf virus disease in rice cultivars with different resistance levels

Yue Sun; Dedao Jing; Jiayuan Zhang; Linlin Du; Chenyang Li; Ying Lan; Feng Lin; Tong Zhou

doi:10.3389/fmicb.2023.1323569

Yield components affected by rice black-streaked dwarf virus disease in rice cultivars with different resistance levels

Front Microbiol. 2023 Dec 14:14:1323569. doi: 10.3389/fmicb.2023.1323569. eCollection 2023.

Authors

Yue Sun^#^{1

2}, Dedao Jing^#³, Jiayuan Zhang^{1

2}, Linlin Du¹, Chenyang Li¹, Ying Lan¹, Feng Lin^{1

2}, Tong Zhou^{1

4}

Affiliations

¹ Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu, China.
² College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China.
³ Zhenjiang Institute of Agricultural Sciences of the Ning-Zhen Hilly District, Zhenjiang, Jiangsu, China.
⁴ International Joint Center for Japonica Rice Research, Nanjing, Jiangsu, China.

^# Contributed equally.

Abstract

Introduction: Rice black-streaked dwarf virus disease (RBSDVD) is one of the most destructive rice viral diseases, leading to severe yield losses in rice production. However, little is known about the yield-related components associated with the disease and no resistance cultivars have been successfully used in rice breeding.

Methods: Seven rice cultivars were analyzed in this study, including six commercial rice varieties and a new line Zhongjian No. 201 (ZJ201) containing the resistance gene OsAP47. Resistance levels of these cultivars were evaluated by artificial inoculation and yield components were collected, including panicle length (PL), spikelets per panicle (SPP), ripened grains per panicle (RGPP), as well as panicles per square meter (PPSM) and 1000-grain weight (TGW). Seed setting rate (SSR) were calculated with the data of SPP and RGPP.

Results and discussion: The results showed that ZJ201 displayed the highest resistance level and most of the commercial rice cultivars exhibited susceptible to RBSDVD. Yields of all the rice cultivars were significantly declined except ZJ201 and yield losses produced by RBSDVD were mainly due to the reduction of PL, SPP, RGPP, and TGW, suggesting that developments of these traits are associated with RBSDV infection. Resistant rice cultivar could reduce yield losses by maintaining normal development of these traits. Significant correlations were identified between resistance levels and the yield components except SSR and PPSM. The results provided useful clues for understanding the mechanisms of RBSDV invasion and its effect on rice production. ZJ201 was demonstrated as a resistance material that could be used in rice breeding.

Keywords: RBSDVD; breeding; resistance; rice; yield component.

Grants and funding

The author(s) declare financial support was received for the research, authorship, and/or publication of this article. This research was supported by the National Natural Science Foundation of China (Grant No. 32372513), the Key Research and Development Program of Jiangsu Province (Grant No. BE2022369), and the Open Competition Mechanism to Select the Best Candidates Fund of Jiangsu Province (Grant No. JBGS[2021]008).