Planta (2017) 246:421–431 DOI 10.1007/s00425-017-2703-y ORIGINAL ARTICLE Fe-deﬁciency-induced expression of bHLH104 enhances Fe-deﬁciency tolerance of Arabidopsis thaliana 1,2 1,2 1 1 • • • Ce Wang Xiani Yao Diqiu Yu Gang Liang Received: 20 March 2017 / Accepted: 20 April 2017 / Published online: 27 April 2017 Springer-Verlag Berlin Heidelberg 2017 Abstract tolerance to Fe deﬁciency and Pro :bHLH104-GFP MYB72 Main conclusion Expression of bHLH104-GFP driven plants had a signiﬁcant advantage in growth in alkaline by the MYB72 promoter improves plants’ tolerance to soil, including increased root length, chlorophyll, and Fe deﬁciency and increases seed Fe concentrations. biomass. Further analysis revealed that the expression of Fe-deﬁciency responsive genes was dramatically upregu- Iron (Fe) deﬁciency causes reduced crop yield and quality. lated in both Pro :bHLH104-GFP and Pro :- MYB72 bHLH100 In humans, Fe deﬁciency is directly associated with Fe- bHLH104-GFP plants under Fe-deﬁciency conditions. deﬁciency anemia. Therefore, breeding Fe-deﬁciency tol- When grown in alkaline soil, Pro :bHLH104-GFP MYB72 erant and Fe-enriched plants are an ideal approach to deal plants greatly improved the seed yield and Fe concentra- with these problems. Here, different strategies were tion. These results are fundamental for plant manipulation explored to generate Fe-deﬁciency tolerant and Fe-en-
Planta – Springer Journals
Published: Apr 27, 2017
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