Soil-Water Threshold Range of Chemical Signals and Drought Tolerance Was Mediated by ROS Homeostasis in Winter Wheat During Progressive Soil Drying
Soil-Water Threshold Range of Chemical Signals and Drought Tolerance Was Mediated by ROS Homeostasis in Winter Wheat During Progressive Soil Drying
复制标题
土壤渐进干燥过程中冬小麦化学信号和耐旱性的土壤-水阈值范围是由活性氧稳态介导的
DOI：
10.1007/s00344-008-9057-4
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发表时间：
2008-08
影响因子：
4.8
通讯作者：
Wang, Zhen-Yu
中科院分区：
文献类型：
--
作者：
Xiong, You-Cai;Xu, Bing-Cheng;Li, Feng-Min;Wang, Zhen-Yu
土壤水分化学信号的阈值范围和活性氧（ROS）的稳态可能对小麦的耐旱性有着深远的影响。采用盆栽试验，研究了土壤干旱过程中3个小麦品种（Triticum aestivum）5个收获期内活性氧（ROS）与抗氧化防御系统的动态平衡及其在土壤水分阈值范围与抗旱性相关性中的作用。这些品种是在不同时期培育的。BM1（old），cv. Xiaoyan 6（recent）和cv. Shan 229（现代）。它们被进行了渐进式土壤干燥处理。地上部生物量受两种水分处理（90%和55%田间持水量）的干旱影响。与老品种相比，现代小麦品种具有较低的ROS含量和较高的ROS清除抗氧化能力，土壤干燥度更高（土壤含水量为68-25%）。现代品种也有很好的适应干旱，与22.7天的生存时间更长，减少了20.9%的地上部生物量由于早期的化学信号和更好的平衡之间的ROS生产和抗氧化剂。老品种存活15.3天，地上部生物量减少37.3%。一个更广泛的土壤水分阈值范围内的化学信号正相关，提高耐旱性和更好的活性氧稳态。这些结果表明，活性氧稳态在化学信号的土壤-水阈值范围与耐旱性之间的关系中起着调节作用。
The soil-water threshold range of chemical signals and reactive oxygen species (ROS) homeostasis could have a profound impact on drought tolerance in wheat. A pot experiment was used to investigate the homeostasis between ROS and antioxidant defense at five harvest dates, and its role in the correlation between soil-water threshold range of chemical signals and drought tolerance in three wheat (Triticum aestivum) cultivars during progressive soil drying. The cultivars were bred at different periods, cv. BM1 (old), cv. Xiaoyan6 (recent), and cv. Shan229 (modern). They were treated with progressive soil drying. Shoot biomass was affected by drought imposed by two water treatments (90% and 55% field water capacity). The modern wheat cultivar had a lower ROS content and higher ROS-scavenging antioxidant capacity with greater soil drying (68–25% soil water content) compared with the older cultivar. The modern cultivar also had excellent adaptation to drought, with a longer survival of 22.7 days and less reduction in shoot biomass of 20.9% due to early chemical signals and better balance between ROS production and antioxidants. The older cultivar had survival of 15.3 days and 37.3% reduction of shoot biomass. A wider soil-water threshold range of chemical signals was positively correlated with improved drought tolerance and better ROS homeostasis. These results suggest that ROS homeostasis acts as a regulator in relationships between the soil-water threshold range of chemical signals and drought tolerance.
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影响因子：
6.9
作者：
S. Palmer;D. Berridge;A. McDonald;W. Davies
通讯作者：
S. Palmer;D. Berridge;A. McDonald;W. Davies
DOI：
10.1111/j.1469-8137.1996.tb01856.x
发表时间：
1996-03
期刊：
The New phytologist
影响因子：
--
作者：
Jingxian Zhang;M. Kirkham
通讯作者：
Jingxian Zhang;M. Kirkham
影响因子：
7.4
作者：
McKersie, BD;Murnaghan, J;Bowley, SR
通讯作者：
Bowley, SR
影响因子：
4.3
作者：
Y. Xiong;Fengmin Li;Ting Zhang
通讯作者：
Y. Xiong;Fengmin Li;Ting Zhang
影响因子：
6.9
作者：
Ober, ES;Sharp, RE
通讯作者：
Sharp, RE