Data/hora: 04/06/2024 12:24:35

Provedor de dados: | 74
País: | Brazil
Título: | Characterization and mapping of a spotted leaf mutant in rice (Oryza sativa)
Autores: | Xu,Xue; Zhang,Lili; Liu,Binmei; Ye,Yafeng; Wu,Yuejin.
Data: | 2014-06-01
Ano: | 2014
Palavras-chave: | Gene mapping; Reactive oxygen species; Rice (Orzya sativa); Rice bacterial blight; Spotted leaf mutant.
Resumo: | Spotted leaf mutant belongs to a class of mutants that can produce necrotic lesions spontaneously in plants without any attack by pathogens. These mutants have no beneficial effect on plant productivity but provide a unique opportunity to study programmed cell death in plant defense responses. A novel rice spotted leaf mutant (spl30) was isolated through low-energy heavy ion irradiation. Lesion expression was sensitive to light and humidity. The spl30 mutant caused a decrease in chlorophyll and soluble protein content, with marked accumulation of reactive oxygen species (ROS) around the lesions. In addition, the spl30 mutant significantly enhanced resistance to rice bacterial blight (X. oryzae pv. oryzae) from China (C1-C7). The use of SSR markers showed that the spl30 gene was located between markers XSN2 and XSN4. The genetic distance between the spl30 gene and XSN2 and between spl30 and XSN4 was 1.7 cM and 0.2 cM, respectively. The spl30 gene is a new gene involved in lesion production and may be related to programmed cell death in rice. The ability of this mutant to confer broad resistance to bacterial blight provides a model for studying the interaction between plants and pathogenic bacteria.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000300013
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572014005000001
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.37 n.2 2014
Fonte: | info:eu-repo/semantics/openAccess