Introduction of Bacillus thuringiensis (Bt) gene does not reduce potassium use efficiency of Bt transgenic cotton (Gossypium hirsutum L.)

文献类型： 外文期刊

第一作者： Wang, Qianqian

作者： Wang, Qianqian;Yan, Wei;Zhang, Yichi;Zhan, Manman;Li, Fangjun;Tian, Xiaoli;Luo, Xiaoli;Zhang, Anhong;Xiao, Juanli;Eneji, A. Egrinya

作者机构：

关键词： Biomass; Bt (Bacillus thuringiensis) gene; Cotton (Gossypium hirsutum L.); K uptake; K utilization index; Yield

期刊名称：JOURNAL OF COTTON RESEARCH （ 影响因子：2.6； 五年影响因子：2.8 ）

ISSN： 2096-5044

年卷期： 2022 年 5 卷 1 期

页码：

收录情况： SCI

摘要： Background: Potassium (K) deficiency has become a common field production problem following the widespread adoption of Bacillus thuringiensis (Bt) transgenic cotton (Gossypium hirsutum L.) worldwide. The purpose of this study was to clarify whether the introduction of Bt gene directly reduces the K-use efficiency of cotton to induce K deficiency. Results: The cotton variety, Jihe 321 (wild type, WT) and its two Bt (Cry1Ac)-transgenic overexpression lines (OE-29317, OE-29312) were studied in field with low soil-test K+ (47.8 mg.kg(-1)). In the field with low soil-test K+, only OE-29317 had less biomass and K+ accumulation than the WT at some growth stages. Both Bt lines produced similar or even greater seed cotton yield than WT in the field. When the Bt gene (similar to 70%) in OE-29317 and OE-29312 plants was silenced by virus-induced gene silencing (VIGS), the VIGS-Bt plants did not produce more biomass than VIGS-green fluorescent protein (control) plants. Conclusions: The introduction of Bt gene did not necessarily hinder the K use efficiency of the cotton lines under this study.

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