Physiological and transcriptomic analyses of a yellow-green mutant with high photosynthetic efficiency in wheat (Triticum aestivum L.)
Physiological and transcriptomic analyses of a yellow-green mutant with high photosynthetic efficiency in wheat (Triticum aestivum L.)
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小麦高光合效率黄绿色突变体的生理和转录组分析（Triticum aestivum L.）
DOI：
10.1007/s10142-017-0583-7
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发表时间：
2017-12
影响因子：
2.9
通讯作者：
Hongxia Li
中科院分区：
文献类型：
--
作者：
Yu Wang;Wei Zheng;Weijun Zheng;Jianchu Zhu;Zhenshan Liu;Jinxia Qin;Hongxia Li
通过降低叶绿素（Chl）含量来优化天线尺寸是提高密集作物单作太阳能转换效率的有效策略。为了阐明叶绿素合成调控的生理和分子机制，了解叶绿素含量降低对光合作用的影响，对小麦黄绿突变体冀麦5265 yg进行了形态学、组织学、生理生化和转录水平的研究。济麦5265 yg的叶绿素含量较低，叶绿素a/B比值较高，叶绿体球形，质体小球较少。这是违反直觉的，光系统I和光系统II的光化学量子产额和以下的CO2同化率显着增加，但非光化学猝灭值下降，表明减少的光保护能力的黄绿色突变体。中间池和叶绿素合成途径中的基因表达的分析表明，镁-原卟啉IX（镁-原IX）的合成被部分阻断，由于镁螯合酶亚基的不平衡表达。有趣的是，光合作用相关的核基因（PhANG）的表达上调，类似于枪突变体，其在镁蛋白IX介导的质体到核信号传导途径中具有缺陷。遗传分析表明，黄绿表型受位于第4AL和4 BL染色体上的两对核隐性基因控制。济麦5265 yg是一个新的叶绿素突变体，可用于了解光合作用的改善机制。
Optimizing the antenna size by reducing the chlorophyll (Chl) content is an effective strategy to improve solar energy conversion efficiencies in dense crop monocultures. To elucidate the physiological and molecular mechanisms that regulate Chl biosynthesis and understand the effects of lower Chl content on the photosynthetic process, a light-intensity-dependent yellow-green wheat mutant (Jimai5265yg) was characterized to determine its morphological, histological, physiological, and transcriptional differences with wild type. In addition to lower Chl content with a higher Chl a/b ratio, Jimai5265yg has spherical chloroplasts with few plastoglobule. It is counterintuitive that the photochemical quantum yield of both photosystem I and photosystem II and the following CO2 assimilation rate significantly increased, but the value of nonphotochemical quenching decreased, indicating a reduction of the photoprotective capacity of this yellow-green mutant. Analysis of intermediate pools and the expression of genes in the Chl synthesis pathway indicated that Mg-protoporphyrin IX (Mg-Proto IX) synthesis was partially blocked due to the imbalanced expression of Mg-chelatase subunits. Interestingly, the expression of photosynthesis-associated nuclear genes (PhANGs) was upregulated, resembling gun mutants which have defects in the Mg-Proto IX-mediated plastid-to-nucleus signaling pathway. A genetic analysis indicated that the yellow-green phenotype was controlled by two nuclear recessive genes located on chromosomes 4AL and 4BL. Jimai5265yg is a novel chlorina mutant which could be used for understanding photosynthesis improvement mechanisms.
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影响因子：
7.2
作者：
Goslings, D;Meskauskiene, R;Apel, K
通讯作者：
Apel, K
YGL138(t)，编码假定的信号识别颗粒 54 kDa 蛋白，参与水稻叶绿体发育
DOI：
10.1186/1939-8433-6-7
发表时间：
2013-03-27
期刊：
Rice (New York, N.Y.)
影响因子：
--
作者：
Zhang F;Luo X;Hu B;Wan Y;Xie J
通讯作者：
Xie J
DOI：
10.1016/0304-4165(72)90086-4
发表时间：
1972-01-01
期刊：
BIOCHIMICA ET BIOPHYSICA ACTA
影响因子：
--
作者：
GOUGH, S
通讯作者：
GOUGH, S
影响因子：
2.9
作者：
M. A. Stanton;Lynn Ullmann-Zeunert;N. Wielsch;S. Bartram;A. Svatoš;I. Baldwin;K. Groten
通讯作者：
M. A. Stanton;Lynn Ullmann-Zeunert;N. Wielsch;S. Bartram;A. Svatoš;I. Baldwin;K. Groten
影响因子：
3.7
作者：
Kalaji, Hazem M.;Schansker, Gert;Ladle, Richard J.;Goltsev, Vasilij;Bosa, Karolina;Allakhverdiev, Suleyman I.;Brestic, Marian;Bussotti, Filippo;Calatayud, Angeles;Dabrowski, Piotr;Elsheery, Nabil I.;Ferroni, Lorenzo;Guidi, Lucia;Hogewoning, Sander W.;Jajoo, Anjana;Misra, Amarendra N.;Nebauer, Sergio G.;Pancaldi, Simonetta;Penella, Consuelo;Poli, DorothyBelle;Pollastrini, Martina;Romanowska-Duda, Zdzislawa B.;Rutkowska, Beata;Serodio, Joao;Suresh, Kancherla;Szulc, Wieslaw;Tambussi, Eduardo;Yanniccari, Marcos;Zivcak, Marek
通讯作者：
Zivcak, Marek