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Bph6 encodes an exocyst-localized protein and confers broad resistance to planthoppers in rice
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Bph6 encodes an exocyst-localized protein and confers broad resistance to planthoppers in rice
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Journal Article
Bph6 encodes an exocyst-localized protein and confers broad resistance to planthoppers in rice
2018
Overview
The brown planthopper (BPH) and white-backed planthopper (WBPH) are the most destructive insect pests of rice, and they pose serious threats to rice production throughout Asia. Thus, there are urgent needs to identify resistance-conferring genes and to breed planthopper-resistant rice varieties. Here we report the map-based cloning and functional analysis of
Bph6
, a gene that confers resistance to planthoppers in rice.
Bph6
encodes a previously uncharacterized protein that localizes to exocysts and interacts with the exocyst subunit OsEXO70E1.
Bph6
expression increases exocytosis and participates in cell wall maintenance and reinforcement. A coordinated cytokinin, salicylic acid and jasmonic acid signaling pathway is activated in
Bph6
-carrying plants, which display broad resistance to all tested BPH biotypes and to WBPH without sacrificing yield, as these plants were found to maintain a high level of performance in a field that was heavily infested with BPH. Our results suggest that a superior resistance gene that evolved long ago in a region where planthoppers are found year round could be very valuable for controlling agricultural insect pests.
The study reports map-based cloning and functional analysis of
Bph6
, which is associated with resistance to planthoppers in rice. BPH6 localizes to the exocyst and interacts with OsEXO70E1, and suppression of
OsExo70E1
expression decreases resistance in
Bph6
-NIL plants.
Publisher
Nature Publishing Group US,Nature Publishing Group
Subject
/ 14
/ 38
/ 38/1
/ 38/111
/ 38/22
/ 38/61
/ 38/77
/ 38/89
/ 38/90
/ Animal Genetics and Genomics
/ Animals
/ Biomedical and Life Sciences
/ Biotypes
/ Cloning
/ Disease Resistance - genetics
/ Genes
/ Genomics
/ Insects
/ Metabolic Networks and Pathways - genetics
/ Pest Control, Biological - methods
/ Pests
/ Phenols (Class of compounds)
/ Plants, Genetically Modified
/ Proteins
/ Rice
