Identification and Gene Mapping of Starch Accumulation and Early Senes-cence Leaf Mutant 
            <i>esl9</i> in Rice

Xiao, Yanhua; Chen, Xin-Long; Du, Dan; Xing, Yanmei; Zhang, Tian-Quan; Zhu, Ming; Liu, Mingming; Zhu, Xiaoyan; Sang, Xianchun; He, Guanghua

doi:10.3724/sp.j.1006.2017.00473

Cited by 4 publications

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“…In esl10 , the expression of OsSPS1 , OsSPS11 , OsCFBP1 , and OsCFBP2 were downregulated, which may lead to a decrease in cytoplasmic sucrose synthesis. Most TPs are transported to the cytoplasm through the carrier on the chloroplast membrane to synthesize sucrose in rice, and excess TP synthesizes starch in chloroplasts (Xiao et al, 2017). Downregulation of OsTPT1 and OsTPT2 expression in esl10 indicates that the TP distribution pathway may be altered, which may result in smaller quantities of TP used for sucrose synthesis in the cytoplasm and greater quantities used for starch synthesis.…”

Section: Discussionmentioning

confidence: 99%

“…The gene LTN1 encodes a protein that contains a ubiquitin‐binding domain, and its lack of function promotes plant uptake and transport of phosphate (Pi), resulting in overaccumulation of Pi on the aerial part, causing the leaves to die and eventually leading to plant senescence (Hu et al, 2011). A number of premature senescent mutants have been reported, such as positive regulator of grain length 2 ( pgl2 ) (Zhu et al, 2007), presenescing leaf 1 ( psl1 ) (Wang et al, 2006), presenescing leaf 2 ( psl2 ) (Zhang et al, 2010), presenescing leaf 3 ( psl3 ) (Fang et al, 2010), premature senescence, tentatively [ pse ( t )] (Li et al, 2005), premature senescence leaf with spots 1 ( psls1 ) (Huang et al, 2016), non‐yellow coloring 4‐1 ( nyc4‐1 ) (Yamatani et al, 2013), lesion mimic and early senescence 1 ( lmes1 ) (Li et al, 2014), early senescence leaf 2 ( esl2 ) (Xu et al, 2012), early senescent leaf 3 ( esl3 ) (Miao et al, 2013), early senescent leaf 4 ( esl4 ) (Guo et al, 2014), early senescent leaf 5 ( esl5 ) (Sang et al, 2014), leaf apex dead ( lad ) (Du et al, 2012), and early senescent leaf 9 ( esl9 ) (Xiao et al, 2017).…”

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confidence: 99%

“…Little information is presently available on the mechanism of premature senescence induced by starch accumulation in rice. In the rice esl9 mutant, excessive accumulation of starch granules in the leaf causes destruction of chloroplast structure and decrease in the concentrations of photosynthetic pigments and eventually leads to premature senescence (Xiao et al, 2017).…”

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Identification and Gene Fine Mapping of Starch Accumulation and Early Senescent Leaf Mutant esl10 in Rice

Chen

Zhu

et al. 2018

Crop Science

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A novel starch accumulation and early senescent leaf mutant esl10 was identified among progenies of the rice (Oryza sativa L.) indica maintainer line Xinong 1B raised from seeds treated with ethyl methane sulfonate (EMS). Under paddy field conditions, leaf starch accumulation commenced at the three‐leaf stage in the mutant esl10 and the leaves began to yellow at the four‐leaf stage, gradually extending from the tip to the middle of the leaf. The yellowing phenotype was most obvious at the tillering stage and persisted until maturity. Compared with the wild type, photosynthetic pigment concentrations and net photosynthetic rate of esl10 were significantly lower, whereas the concentrations of reactive oxygen species and malondialdehyde (MDA) were higher. Moreover, catalase (CAT), peroxidase (POD), and superoxide dismutase (SOD) activities decreased in leaves at the tillering stage. Quantitative real‐time polymerase chain reaction showed that the expression of genes associated with starch metabolism pathway changed. Excessive accumulation of leaf starch may have caused the leaf premature senescence, finally influencing grain yield and quality of esl10. Genetic analysis showed that esl10 was controlled by a dominant nuclear gene (tentatively called ESL10). ESL10 was mapped between the single‐nucleotide polymorphism markers SNP585 and SNP498 on chromosome 7 with a physical distance of 416.29 kb including 56 annotated genes. The results provide a foundation for gene cloning and functional analysis of ESL10.

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confidence: 99%

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confidence: 99%

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Identification and Gene Fine Mapping of Starch Accumulation and Early Senescent Leaf Mutant esl10 in Rice

Chen

Zhu

et al. 2018

Crop Science

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“…These included psl1 (Wang et al, 2006), pgl2 (Zhu et al, 2007), psl3 (Fang et al, 2010), esl2 (Xu et al, 2012), lad (Du et al, 2012), esl3 (Miao et al, 2013), esl4 (Guo et al, 2014), esl5 , esl6 (Yang et al, 2016a), esl9 (Xiao et al, 2017), and esl10 (Chen et al, 2018). These included psl1 (Wang et al, 2006), pgl2 (Zhu et al, 2007), psl3 (Fang et al, 2010), esl2 (Xu et al, 2012), lad (Du et al, 2012), esl3 (Miao et al, 2013), esl4 (Guo et al, 2014), esl5 , esl6 (Yang et al, 2016a), esl9 (Xiao et al, 2017), and esl10 (Chen et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Numerous early leaf senescence mutants of rice have been identified, and their molecular positioning has been reported. These included psl1 (Wang et al, 2006), pgl2 (Zhu et al, 2007), psl3 (Fang et al, 2010), esl2 (Xu et al, 2012), lad (Du et al, 2012), esl3 (Miao et al, 2013), esl4 (Guo et al, 2014), esl5 , esl6 (Yang et al, 2016a), esl9 (Xiao et al, 2017), and esl10 (Chen et al, 2018). However, few senescence-associated genes have been cloned in rice, such as NYC4 (Yamatani et al, 2013), OsNAP (Liang and Chu, 2015), NOE1 (Lin et al, 2012), and LTN1 (Hu et al, 2011).…”

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Identification and Gene Mapping of an Early Senescent Leaf Mutant esl11 of Rice

Wang

Xie

et al. 2018

Crop Science

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As an essential process in the life of a plant, natural leaf senescence is necessary for adaptation to environmental diversity, whereas early leaf senescence can reduce per‐unit yield and cause inferior harvest quality during crop production. To explore the molecular mechanism of leaf senescence in rice (Oryza sativa L.), we studied an early senescence leaf (esl11) mutant obtained by ethyl methane sulfonate (EMS) mutagenesis. The leaves of the esl11 mutant showed normal growth and leaf coloration prior to the three‐leaf stage, but after this stage, all fully expanded leaves underwent yellowing and senescence from the edges of the leaf blade and tips, apart from the emerging leaves, which showed gradual growth. The net photosynthetic rate and photosynthetic pigment content of the tip and leaf base of the mutant esl11 were significantly lower than those of the wild type. The role of active oxygen species O2−, H2O2, and ⋅OH in the mutant increased, whereas the activities of MDA, peroxidase, superoxide dismutase, and catalase decreased compared with the wild type. The results of trypan blue staining on the senescent part of the leaf tip of the mutant esl11 indicated procedural death in part of the cell, whereas the wild type showed no change. The early leaf senescence trait in the mutant was controlled by of recessive nuclear gene, which was mapped to chromosome 7, with a physical range of 143.0 kb. The results of this study provide the foundation for important progress in gene cloning and functional analysis of the esl11 gene.

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Gene mapping of starch accumulation and premature leaf senescence in the ossac3 mutant of rice

et al. 2018

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Identification and Gene Mapping of Starch Accumulation and Early Senes-cence Leaf Mutant esl9 in Rice

Cited by 4 publications

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Identification and Gene Fine Mapping of Starch Accumulation and Early Senescent Leaf Mutant esl10 in Rice

Identification and Gene Fine Mapping of Starch Accumulation and Early Senescent Leaf Mutant esl10 in Rice

Identification and Gene Mapping of an Early Senescent Leaf Mutant esl11 of Rice

Gene mapping of starch accumulation and premature leaf senescence in the ossac3 mutant of rice

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