期刊
GLOBAL CHANGE BIOLOGY BIOENERGY
卷 9, 期 7, 页码 1222-1237出版社
WILEY
DOI: 10.1111/gcbb.12413
关键词
bioenergy; energy crop domestication; long-term salt tolerance; marginal land; Miscanthus lutarioriparius; resource allocation
资金
- National Natural Science Foundation of China [31500186, 31400284]
- Science and Technology Service Network Initiative of the Chinese Academy of Sciences [KFJ-EW-STS-061, KFJ-EW-STS-119]
- government of Kenli County of the Shandong Province
- government of Dongying City of the Shandong Province
Given the growing need for biofuel production but the lack of suitable land for producing biomass feedstock, development of stress-tolerant energy crops will be increasingly important. We used comparative transcriptomics to reveal differential responses to long-term salt stress among five populations of Miscanthus lutarioriparius grown in the natural habitats and salinity experimental site. A total of 59 genes were found to be potentially responsive to the high-salinity conditions shared by the five populations, including those involved in detoxification, plant defense, photosynthesis, and signal transduction. Of these genes, about 70% were related to abiotic stress response. Among five populations, the most contrasting performance between relatively high survival rates and the relatively weak growing traits was in accordance with the down-regulation of genes involved in growth and up-regulation of genes related to plant stress tolerance in one of the populations. These results might reveal a potential tolerance-productivity trade-off, where resources were allocated from growth to stress resistance. The comparative transcriptomics of different populations among different environments will provide a basis for breeding and domestication of energy crops.
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