Pyramiding of ozone tolerance QTLs OzT8 and OzT9 confers improved tolerance to season-long ozone exposure in rice
Pyramiding of ozone tolerance QTLs OzT8 and OzT9 confers improved tolerance to season-long ozone exposure in rice
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臭氧耐受性 QTL OzT8 和 OzT9 的金字塔提高了水稻对整个季节臭氧暴露的耐受性
DOI：
10.1016/j.envexpbot.2014.03.005
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发表时间：
2014-08
影响因子：
5.7
通讯作者：
Frei Michael
中科院分区：
文献类型：
--
作者：
Wang Yunxia;Yang Lianxin;Hoeller Meike;Zaisheng Shao;Pariasca-Tanaka Juan;Wissuwa Matthias;Frei Michael
在严重依赖大米作为主要粮食作物的世界部分地区，对流层臭氧浓度正在上升。因此，通过培育适应性品种来限制臭氧引起的水稻产量损失，对保障水稻消费者的粮食安全具有重要意义。本研究利用两个含有臭氧抗性QTL的染色体片段置换系(SL)OzT8和OzT9进行杂交，获得了4个在这两个座位上都有耐臭氧等位基因的品系。对OzT8/OzT9品系与敏感亲本日本晴、含有单个QTL的SL46(OzT8)和SL41(OzT9)进行了长达一季的臭氧熏蒸试验(100亿NL+L−1，每天8h，与没有臭氧控制相比)。在整个季节，OzT8/OzT9品系的叶片古铜化程度显著低于日本裸露品系，这与显著降低脂质过氧化水平相一致。此外，尽管气孔导度较低，叶绿素水平较高，但OzT8/OzT9系的净光合速率往往较高。这些生理优势导致在臭氧胁迫下表现出更好的产量表现。日本晴的总生物量和地上部生物量分别下降了55%和52%，而OzT8/OzT9品系的下降幅度仅为36-41%和25-37%。日本晴的每穗粒数和每株小穗数分别减少了35%和46%，而OzT8/OzT9仅减少了15%~18%和29%~34%。总体而言，我们的数据表明，OzT8和OzT9的聚合导致了协同效应，从而在臭氧胁迫下产生了更好的产量表现。
Tropospheric ozone concentrations are rising in parts of the world which rely heavily on rice as the major staple crop. Therefore, limiting ozone induced rice yield losses through the breeding of adapted varieties constitutes an important contribution to the food security of rice consumers. In this study we crossed two chromosome segment substitution lines (SL) containing individual ozone tolerance QTLs,OzT8andOzT9, to obtain four lines with tolerance alleles at both loci. TheOzT8/OzT9lines were tested in a season long ozone fumigation experiment (100 nL L−1, 8 h per day, versus no ozone control) along with their sensitive parent Nipponbare, and SL46 (OzT8) and SL41 (OzT9) containing single QTLs. TheOzT8/OzT9lines showed significantly lower leaf bronzing than Nipponbare throughout the season, which was consistent with a significantly lower level of lipid peroxidation. In additionOzT8/OzT9lines tended to have higher net photosynthetic rate despite lower stomatal conductance, and higher chlorophyll levels. These physiological advantages led to superior yield performance under ozone stress. Total biomass and shoot biomass yield were drastically reduced by 55 and 52% in Nipponbare, but for theOzT8/OzT9lines reductions ranged only between 36–41% and 25–37%, respectively. Similarly the spikelet number/panicle and the spikelet number/plant were reduced by 35% and 46% in Nipponbare, but only by 15–18% and 29–34% in theOzT8/OzT9lines. Overall, our data suggest that the pyramiding ofOzT8andOzT9led to synergies resulting in superior yield performance under ozone stress.
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DOI：
10.1016/j.plaphy.2012.01.007
发表时间：
2012-03
期刊：
Plant physiology and biochemistry : PPB
影响因子：
--
作者：
Y. Zheng;X. Li;Y. Li;B. Miao;H. Xu;M. Simmons;X. H. Yang
通讯作者：
Y. Zheng;X. Li;Y. Li;B. Miao;H. Xu;M. Simmons;X. H. Yang
高叶绿素水稻Gc突变体光合特性及抗氧化酶系统
影响因子：
1.4
作者：
Niu, X. D.;Li, G. R.;Kang, Z. H.;Huang, J. L.;Wang, G. X.
通讯作者：
Wang, G. X.
DOI：
10.1016/j.plaphy.2013.06.006
发表时间：
2013-09
期刊：
Plant physiology and biochemistry : PPB
影响因子：
--
作者：
Y. Ueda;Linbo Wu;M. Frei
通讯作者：
Y. Ueda;Linbo Wu;M. Frei
影响因子：
6.9
作者：
Frei, Michael;Tanaka, Juan Pariasca;Wissuwa, Matthias
通讯作者：
Wissuwa, Matthias
对流层臭氧升高对杂交水稻品质的影响：自由空气气体浓度富集（FACE）实验
影响因子：
5.8
作者：
Wang, Yunxia;Yang, Lianxin;Wang, Yulong
通讯作者：
Wang, Yulong