首页|Infection and Colonization of Pathogenic FungusFusarium proliferatum in Rice Spikelet Rot Disease

Infection and Colonization of Pathogenic FungusFusarium proliferatum in Rice Spikelet Rot Disease

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Rice spikelet rot disease (RSRD), caused byFusarium proliferatum, is an emerging disease. So far, the effects of diseased rice floral organs as well as the primary infection sites and stages of this pathogen are not determined. We investigated changes in the floral organs, along with the infection processes of the pathogen in plants inoculated withF. proliferatum and labelled with a green fluorescent protein during different growth stages of rice. The results showed that RSRD is not a systemic infectious disease, which has negative effects on the fertility of the infected rice.F. proliferatumcaused brown colored anthers, crinkled pistils and ovaries, pollen grain deformities and anther indehiscence. The number of pollen grains on the stigmas decreased significantly in the infected spikelets, and the anther dehiscence and seed-setting rate successively declined by 69％ and 73％, respectively, as a result of the infection. The initial infection stage occurred at the pollen cell maturity stage, and the primary invasion sites were determined to be the anthers of rice. It was noted that the pathogen mainly damaged the pollen cells, and with the exception of the filaments, proceeded to colonize the pistils and endosperm.

Fusarium proliferatumrice spikelet rot diseasegreen fluorescent proteininfection processinfection stageinvasion site

SUN Lei、WANG Ling、LIU Lianmeng、HOU Yuxuan、XU Yihua、LIANG Mengqi、GAO Jian、LI Qiqin、HUANG Shiwen

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College of Agronomy, Guangxi University, Nanning 530003, China

State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China

国家重点研发计划国家重点研发计划国家重点研发计划国家自然科学基金浙江省自然科学基金Agriculture, Rural Areas, and Farmers Six-Party Science and Technology Cooperation Projects of Zhejiang ProvinceInnovation Project of the Chinese Academy of Agricultural SciencesCollaborative Innovation Project of the CAASCore Research Budget of Nonprofit Governmental Research Insititute of ChinaZhejiang Key Research and Development Program of China

2016YFD02008012017YFD03004092018YFD 02003040531800133LQ18C140005CTZB- F160728AWZ-SNY1-4CAASCAAS-XTCX20160122014RG005-22019C02018

2019

水稻科学(英文版)
中国水稻研究所

水稻科学(英文版)

CSTPCDCSCDSCI
影响因子：0.269
ISSN：1672-6308
年,卷(期)：2019.26(1)
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