赤霉素途径在生物炭介导的生长促进中的作用。
A role for the gibberellin pathway in biochar-mediated growth promotion.
机构信息
Purdue University, Department of Botany and Plant Pathology, 915 W. State Street, West Lafayette, Indiana, 47906, USA.
Purdue Center for Plant Biology, Purdue University, West Lafayette, IN, USA.
出版信息
Sci Rep. 2018 Mar 29;8(1):5389. doi: 10.1038/s41598-018-23677-9.
Biochar is a carbon negative soil amendment that can promote crop growth. However, the effects of biochar on different plant species and cultivars within a species are not well understood, nor is the underlying basis of biochar-mediated plant growth promotion. This knowledge is critical for optimal use of biochar and for breeding biochar-responsive plants. Here, we investigated the genotype-specific effects of biochar on two cultivars of Solanum lycopersicum (tomato), and two wild relatives of tomato, Solanum pimpinellifolium, and Solanum pennelli, in two types of biochar. Biochar promoted shoot growth in all genotypes independent of biochar type but had genotype-dependent effects on other plant traits. Germination tests, exogenous GA application and mutant analysis indicated a role for GA in biochar-mediated plant growth promotion. Together, our results suggest that biochar promotes growth partially through stimulation of the GA pathway.
生物炭是一种负碳土壤改良剂，可以促进作物生长。然而，生物炭对同一物种内不同植物物种和品种的影响，以及生物炭促进植物生长的潜在基础尚不清楚。这方面的知识对于生物炭的最佳利用以及培育对生物炭有响应的植物至关重要。在这里，我们研究了生物炭对两个番茄品种（番茄）和两个番茄野生近缘种（Solanum pimpinellifolium 和 Solanum pennelli）的基因型特异性影响，使用了两种类型的生物炭。生物炭促进了所有基因型的地上部分生长，而与生物炭类型无关，但对其他植物性状有基因型依赖性影响。萌发试验、外源 GA 应用和突变体分析表明，GA 在生物炭介导的植物生长促进中起作用。总的来说，我们的结果表明，生物炭通过刺激 GA 途径促进生长。
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