Out of Africa: characterizing the natural variation in dynamic photosynthetic traits in a diverse population of African rice (Oryza glaberrima).
Out of Africa: characterizing the natural variation in dynamic photosynthetic traits in a diverse population of African rice (Oryza glaberrima).
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DOI：
10.1093/jxb/erab459
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发表时间：
2022-05-23
影响因子：
6.9
通讯作者：
中科院分区：
文献类型：
--
作者：
光秃稻对非洲不同的环境具有潜在的适应性。在这里，我们显示了在一个大的加入收集的光合作用，光保护，气孔导度的动态特性的变化。非洲水稻（Oryza glaberrima）已经适应了具有挑战性的环境，是一个有前途的遗传变异来源。以155个O.光果属使植物在农艺温室中生长至分蘖后期。通过气体交换和叶绿素荧光沿着根和茎生物量、气孔密度和叶面积来测量黑暗和弱光下光合作用的诱导。稳态和动力学响应进行了建模。我们描述了广泛的自然变异O。glaberrima的光合作用的稳态，诱导和还原反应，具有基因发现和作物改良的价值。主成分分析表明，关键集群的植物生物量，光合作用动力学（CO2同化，A），和光保护诱导和减少（测量非光化学猝灭，NPQ），符合不同的适应。根据水分供应、气孔导度、A和NPQ不同的国家，收集的数据也有聚类，表明动态光合作用在O. glaberrima。NPQ、A和gs的动态变化与生物量和叶面积呈高度相关。因此，动态光合特性和NPQ是O. glaberrima，我们强调NPQ动力学和低光下的NPQ。
Oryza glaberrimahas potential adaptive traits to diverse African environments. Here we show variation in dynamic traits of photosynthesis, photoprotection, and stomatal conductance in a large accession collection. African rice (Oryza glaberrima) has adapted to challenging environments and is a promising source of genetic variation. We analysed dynamics of photosynthesis and morphology in a reference set of 155 O. glaberrima accessions. Plants were grown in an agronomy glasshouse to late tillering stage. Photosynthesis induction from darkness and the decrease in low light was measured by gas exchange and chlorophyll fluorescence along with root and shoot biomass, stomatal density, and leaf area. Steady-state and kinetic responses were modelled. We describe extensive natural variation in O. glaberrima for steady-state, induction, and reduction responses of photosynthesis that has value for gene discovery and crop improvement. Principal component analyses indicated key clusters of plant biomass, kinetics of photosynthesis (CO2 assimilation, A), and photoprotection induction and reduction (measured by non-photochemical quenching, NPQ), consistent with diverse adaptation. Accessions also clustered according to countries with differing water availability, stomatal conductance (gs), A, and NPQ, indicating that dynamic photosynthesis has adaptive value in O. glaberrima. Kinetics of NPQ, A, and gs showed high correlation with biomass and leaf area. We conclude that dynamic photosynthetic traits and NPQ are important within O. glaberrima, and we highlight NPQ kinetics and NPQ under low light.
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影响因子：
5.6
作者：
Burgess AJ;Retkute R;Preston SP;Jensen OE;Pound MP;Pridmore TP;Murchie EH
通讯作者：
Murchie EH
影响因子：
6.9
作者：
Drake PL;Froend RH;Franks PJ
通讯作者：
Franks PJ
影响因子：
7.3
作者：
Campany, Courtney E.;Tjoelker, Mark G.;Duursma, Remko A.
通讯作者：
Duursma, Remko A.
影响因子：
5.9
作者：
Hubbart S;Smillie IRA;Heatley M;Swarup R;Foo CC;Zhao L;Murchie EH
通讯作者：
Murchie EH
影响因子：
9.4
作者：
De Souza, Amanda P.;Wang, Yu;Long, Stephen P.
通讯作者：
Long, Stephen P.