Partial loss-of-function of NAL1 alters canopy photosynthesis by changing the contribution of upper and lower canopy leaves in rice.
Partial loss-of-function of NAL1 alters canopy photosynthesis by changing the contribution of upper and lower canopy leaves in rice.
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DOI：
10.1038/s41598-017-15886-5
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发表时间：
2017-11-21
影响因子：
4.6
通讯作者：
Ishimaru K
中科院分区：
文献类型：
--
作者：
Hirotsu N;Ujiie K;Perera I;Iri A;Kashiwagi T;Ishimaru K
对叶片和冠层光合作用的遗传基础知之甚少。本研究旨在通过增加叶片氮含量来检测控制光合作用的新数量性状位点，并分析其对叶片和冠层光合作用的影响。为了鉴定提高叶片光合速率的QTL，我们筛选了水稻染色体片段代换系（CSSLs）。japonica栽培品种越光（Koshihikari）和O.莴苣籼稻品种Nona Bokra使用LNC每叶面积作为表型指标。第四染色体上的基因座叶氮含量（qLNC 4）与LNC和单位叶面积光合速率的增加相关。此外，在位于qLNC 4区域的窄叶1（NAL1）基因中鉴定出非同义氨基酸取代。该NAL 1等位基因增加旗叶的LNC和单位叶面积的光合速率，但不增加全叶光合作用。该NAL1等位基因还增加下部叶的光捕获和全叶氮含量，并且与旗叶的衰老较慢相关。这些结果表明，该NAL1等位基因不增加全叶光合作用，但在调节整个植物水平的性状之间的空间和时间的权衡中发挥作用。
Little is known about the genetic basis of leaf and canopy photosynthesis. Here we aimed to detect novel quantitative trait loci (QTL) controlling photosynthesis by increasing leaf nitrogen content (LNC) per leaf area and analysed its effect on leaf and canopy photosynthesis. To identify QTL that increase photosynthetic rate in leaves, we screened chromosome segment substitution lines (CSSLs) of Oryza sativa ssp. japonica cultivar Koshihikari and O. sativa ssp. indica cultivar Nona Bokra using LNC per leaf area as the phenotype indicator. Locus leaf nitrogen content on chromosome four (qLNC4) is associated with increased LNC and photosynthetic rate per leaf area. Moreover, a non-synonymous amino acid substitution was identified in the NARROW LEAF 1 (NAL1) gene located in the qLNC4 region. This NAL1 allele increases LNC and photosynthetic rate per leaf area in flag leaves but does not increase whole-leaf photosynthesis. This NAL1 allele also increases light capture and whole-leaf nitrogen content of the lower leaves and is associated with slower senescence in flag leaves. These results suggest that this NAL1 allele does not increase whole-leaf photosynthesis but plays a role in regulating spatial and temporal trade-offs among traits at the whole-plant level.
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影响因子：
30.8
作者：
Ren, ZH;Gao, JP;Lin, HX
通讯作者：
Lin, HX
影响因子：
5.4
作者：
Uga, Y.;Nonoue, Y.;Yano, M.
通讯作者：
Yano, M.
影响因子：
14.9
作者：
Rice Annotation Project;Tanaka T;Antonio BA;Kikuchi S;Matsumoto T;Nagamura Y;Numa H;Sakai H;Wu J;Itoh T;Sasaki T;Aono R;Fujii Y;Habara T;Harada E;Kanno M;Kawahara Y;Kawashima H;Kubooka H;Matsuya A;Nakaoka H;Saichi N;Sanbonmatsu R;Sato Y;Shinso Y;Suzuki M;Takeda J;Tanino M;Todokoro F;Yamaguchi K;Yamamoto N;Yamasaki C;Imanishi T;Okido T;Tada M;Ikeo K;Tateno Y;Gojobori T;Lin YC;Wei FJ;Hsing YI;Zhao Q;Han B;Kramer MR;McCombie RW;Lonsdale D;O'Donovan CC;Whitfield EJ;Apweiler R;Koyanagi KO;Khurana JP;Raghuvanshi S;Singh NK;Tyagi AK;Haberer G;Fujisawa M;Hosokawa S;Ito Y;Ikawa H;Shibata M;Yamamoto M;Bruskiewich RM;Hoen DR;Bureau TE;Namiki N;Ohyanagi H;Sakai Y;Nobushima S;Sakata K;Barrero RA;Sato Y;Souvorov A;Smith-White B;Tatusova T;An S;An G;OOta S;Fuks G;Fuks G;Messing J;Christie KR;Lieberherr D;Kim H;Zuccolo A;Wing RA;Nobuta K;Green PJ;Lu C;Meyers BC;Chaparro C;Piegu B;Panaud O;Echeverria M
通讯作者：
Echeverria M
影响因子：
1.7
作者：
Anten, NPR;Werger, MJA;Medina, E
通讯作者：
Medina, E
影响因子：
7.4
作者：
MAKINO, A;SAKASHITA, H;OSMOND, B
通讯作者：
OSMOND, B