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Xa26 , a gene conferring resistance to Xanthomonas oryzae pv. oryzae in rice, encodes an LRR receptor kinase‐like protein
Author(s) -
Sun Xinli,
Cao Yinglong,
Yang Zhifen,
Xu Caiguo,
Li Xianghua,
Wang Shiping,
Zhang Qifa
Publication year - 2004
Publication title -
the plant journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.058
H-Index - 269
eISSN - 1365-313X
pISSN - 0960-7412
DOI - 10.1046/j.1365-313x.2003.01976.x
Subject(s) - xanthomonas oryzae , xanthomonas oryzae pv. oryzae , biology , gene , oryza sativa , genetically modified rice , r gene , genetics , transgene , cloning (programming) , seedling , xanthomonas , leucine rich repeat , genetically modified crops , plant disease resistance , microbiology and biotechnology , botany , computer science , programming language
Summary Rice bacterial blight, caused by Xanthomonas oryzae pv. oryzae ( Xoo ), is one of the most serious rice diseases worldwide. A rice gene, Xa26 , conferring resistance against Xoo at both seedling and adult stages was isolated by map‐based cloning strategies from the rice cultivar Minghui 63. Xa26 belongs to a multigene family consisting of four members. It encodes a leucine‐rich repeat (LRR) receptor kinase‐like protein and is constitutively expressed. Sequence analysis revealed that IRBB3 and Zhachanglong lines that are resistant to a broad range of Xoo strains, also carry Xa26 . However, significant difference in lesion length was observed among these lines after inoculation with a set of Xoo strains. Moreover, transgenic plants carrying Xa26 showed enhanced resistance compared with the donor line of the gene in both seedling and adult stages. These results suggest that the resistance conferred by Xa26 is influenced by the genetic background.