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Author Wang M., Zhang T., Peng H., Luo S., Tan J., Jiang K., Heng Y., Zhang X., Guo X., Zheng J., Cheng Z.
Title Rice <i>Premature leaf senescence 2</i>, Encoding a Glycosyltransferase (GT), Is Involved in leaf senescence.
Abstract:
Premature leaf senescence (PLS), which has a significant impact on yield, is caused by various underlying mechanisms. Glycosyltransferases, which function in glycosyl transfer from activated nucleotides to aglycones, are involved in diverse biological processes, but their roles in rice leaf senescence remain elusive. Here, we isolated and characterized a leaf senescence-related gene from the <i>Premature Leaf Senescent</i> mutant (<i>PLS2</i>). The mutant phenotype began with leaf yellowing at tillering and resulted in PLS during the reproductive stage. leaf senescence was associated with an increase in hydrogen peroxide (H2O2) content accompanied with pronounced decreases in net photosynthetic rate, stomatal conductance, and transpiration rate. Map-based cloning revealed that a mutation in LOC_Os03g15840 (<i>PLS2</i>), a putative glycosyltransferase- encoding gene, was responsible for the defective phenotype. <i>PLS2</i> expression was detected in all tissues surveyed, but predominantly in leaf mesophyll cells. Subcellular localization of the PLS2 was in the endoplasmic reticulum. The <i>PLS2</i> mutant accumulated higher levels of sucrose together with decreased expression of sucrose metabolizing genes compared with wild type. These data suggested that the <i>PLS2</i> allele is essential for normal leaf senescence and its mutation resulted in PLS.
Journal Front Plant Sci
Country China
Volume 9
Pages 560
Year 2018
PubMed ID 29755498
PubMed Central ID 5932172
DOI 10.3389/fpls.2018.00560
URL -
Relation
Gene 11N3 ICL NYC3 PLS2 RSUS1 RSUS2 RSUS4 SGR SUT1 SUT2 SWEET15 SWEET4 XA13 _
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain
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Stages in Each Organ
- Muant Lines (Gene)
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Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
/rice/oryzabase