Phenotypic and Genotypic Analysis of Rice Lesion Mimic Mutants

Title
Phenotypic and Genotypic Analysis of Rice Lesion Mimic Mutants
Author(s)
강상구누룰마틴데벤드라판디아[데벤드라판디아]백광현이동선이재현[이재현]강호덕[강호덕]
Keywords
PROTEIN DISULFIDE-ISOMERASE; CELL-DEATH; ARABIDOPSIS-THALIANA; ENHANCED RESISTANCE; DISEASE RESISTANCE; BACTERIAL-BLIGHT; ORYZA-SATIVA; DEFENSE; GENE; PLANTS
Issue Date
201005
Publisher
KOREAN SOC PLANT PATHOLOGY
Citation
PLANT PATHOLOGY JOURNAL, v.26, no.2, pp.159 - 169
Abstract
Lesion mimic mutant (LMM) plants display spontaneous necrotic lesions on their leaves without any pathogenic infection. Specific rice LMMs designated as spoiled leaf (spl) including spl1, spl3, spl4, spl5 and spl6 are genetically known as lesion resembling disease (Ird) mutant. The inheritance patterns in the F(1), and F(2) progenies of these mutants are controlled by recessive genetic factors. Lesion development in the rice LMMs were controlled by both development stages and environmental factors. The rice LMMs exhibited higher numbers of spots under 45 degrees C temperature than those under 30 degrees C. Contents of chlorophyll were drastically reduced at 60 days old LMM leaves when the spot formation was severe. The levels of endogenous hydrogen peroxide were highest at 45 days old mutants but reduced at 60 days old. Transcription levels of stress related genes including thioredoxin peroxidase and protein disulfide isomerase were reduced in spotted leaves than those of non spotted leaves. It could be suggested that scavenging system against reactive oxygen species induced by either stresses or innate metabolisms may not work properly in the rice LMMs. As these rice LMMs autonomously expressed clear lesions of Ird phenotype without pathogen infection, it could useful to understand stresses responses in plants.
URI
http://hdl.handle.net/YU.REPOSITORY/22470http://dx.doi.org/10.5423/PPJ.2010.26.2.159
ISSN
1598-2254
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생명공학부 > 생명공학부 > Articles
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