NDLI: Effects of Drought-Tolerant Ea-DREB2B Transgenic Sugarcane on Bacterial Communities in Soil

Content Provider	Directory of Open Access Journals (DOAJ)
Author	Xiaowen Zhao Yuke Jiang Qi Liu Huichun Yang Ziting Wang Muqing Zhang
Abstract	Drought is a major abiotic stress affecting plant growth and development. Sugarcane, a sugar crop planted in warmer climate, suffers dramatically from drought stress. Bacterial communities colonizing the rhizosphere, where roots sense drought stress initially, have been well studied for their beneficial effects on plant growth and health. The Ea-DREB2B gene cloned from the sugarcane, Saccharum arundinaceum, belongs to the DREB2 subgroup of the DREB gene family, which is involved in drought response regulation. Here, we present a detailed characterization of the rhizoplane, rhizosphere, and bulk soil bacterial communities determined using a high-sequencing approach with the transgenic (TG) sugarcane variety GN18 harboring the drought-tolerant Ea-DREB2B gene and its isogenic wild-type (WT) variety FN95-1702 under the same environmental conditions. In addition, the total carbon (TC), total nitrogen (TN), and total phosphorus (TP) contents in each soil area were compared to explore the relationship between bacterial alteration in the TG and WT plants and environmental factors (TC, TN, TP, C:N, C:P, and N:P). Our results showed that the bacterial communities in the rhizosphere and rhizoplane of TG sugarcane were more similar and perfectly correlated with the environmental factors than those of the WT. This suggested that the bacterial communities of the TG plants were altered in response to the changes in root exudates. The results of our study suggest that the change in soil environment caused by transgenic sugarcane alters soil bacterial communities.
e-ISSN	1664302X
DOI	10.3389/fmicb.2020.00704
Journal	Frontiers in Microbiology
Volume Number	11
Language	English
Publisher	Frontiers Media S.A.
Publisher Date	2020-05-01
Publisher Place	Switzerland
Access Restriction	Open
Subject Keyword	Microbiology Drought-tolerant Ea-dreb2b Sugarcane Bacterial Community Environmental Factor
Content Type	Text
Resource Type	Article

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