Transcriptional Profile Corroborates that bml Mutant Plays likely Role in Premature Leaf Senescence of Rice (Oryza sativa L.)

被引:6
作者
Akhter, Delara [1 ,2 ]
Qin, Ran [1 ]
Nath, Ujjal Kumar [3 ]
Eshag, Jamal [1 ]
Jin, Xiaoli [1 ]
Shi, Chunhai [1 ]
机构
[1] Zhejiang Univ, Dept Agron, Hangzhou 310027, Zhejiang, Peoples R China
[2] Sylhet Agr Univ, Dept Genet & Plant Breeding, Sylhet 3100, Bangladesh
[3] Bangladesh Agr Univ, Dept Genet & Plant Breeding, Mymensingh 2202, Bangladesh
关键词
rice; bml (brown midrib leaf); transcriptional analysis; DEGs; GO; KEGG; KOG; cluster analysis; HARVESTING COMPLEX-II; PLANT SENESCENCE; SMALL AUXIN; RNA GENE; PROTEIN; DEGRADATION; IDENTIFICATION; REMOBILIZATION; DEATH; YIELD;
D O I
10.3390/ijms20071708
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Leaf senescence is the last period of leaf growth and a dynamic procedure associated with its death. The adaptability of the plants to changing environments occurs thanks to leaf senescence. Hence, transcriptional profiling is important to figure out the exact mechanisms of inducing leaf senescence in a particular crop, such as rice. From this perspective, leaf samples of two different rice genotypes, the brown midrib leaf (bml) mutant and its wild type (WT) were sampled for transcriptional profiling to identify differentially-expressed genes (DEGs). We identified 2670 DEGs, among which 1657 genes were up- and 1013 genes were down-regulated. These DEGs were enriched in binding and catalytic activity, followed by the single organism process and metabolic process through gene ontology (GO), while the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis showed that the DEGs were related to the plant hormone signal transduction and photosynthetic pathway enrichment. The expression pattern and the clustering of DEGs revealed that the WRKY and NAC family, as well as zinc finger transcription factors, had greater effects on early-senescence of leaf compared to other transcription factors. These findings will help to elucidate the precise functional role of bml rice mutant in the early-leaf senescence.
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页数:18
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