The apple bHLH transcription factor MdbHLH3 functions in determining the fruit carbohydrates and malate.
The apple bHLH transcription factor MdbHLH3 functions in determining the fruit carbohydrates and malate.
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苹果bHLH转录因子MdbHLH3在确定水果碳水化合物和苹果酸中发挥作用
DOI:
10.1111/pbi.13461
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发表时间:
2021-03
影响因子:
13.8
通讯作者:
Hao YJ
中科院分区:
文献类型:
--
作者:
Yu JQ;Gu KD;Sun CH;Zhang QY;Wang JH;Ma FF;You CX;Hu DG;Hao YJ
Summary Changes in carbohydrates and organic acids largely determine the palatability of edible tissues of horticulture crops. Elucidating the potential molecular mechanisms involved in the change in carbohydrates and organic acids, and their temporal and spatial crosstalk are key steps in understanding fruit developmental processes. Here, we used apple (Malus domestica Borkh.) as research materials and found that MdbHLH3, a basic helix–loop–helix transcription factor (bHLH TF), modulates the accumulation of malate and carbohydrates. Biochemical analyses demonstrated that MdbHLH3 directly binds to the promoter of MdcyMDH that encodes an apple cytosolic NAD‐dependent malate dehydrogenase, activating its transcriptional expression, thereby promoting malate accumulation in apple fruits. Additionally, MdbHLH3 overexpression increased the photosynthetic capacity and carbohydrate levels in apple leaves and also enhanced the carbohydrate accumulation in fruits by adjusting carbohydrate allocation from sources to sinks. Overall, our findings provide new insights into the mechanism of how the bHLH TF MdbHLH3 modulates the fruit quality. It directly regulates the expression of cytosolic malate dehydrogenase MdcyMDH to coordinate carbohydrate allocation and malate accumulation in apple.
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影响因子:
5.1
作者:
Bahrami, AR;Chen, ZH;Gray, JE
通讯作者:
Gray, JE
影响因子:
3.1
作者:
Bai, Yang;Dougherty, Laura;Xu, Kenong
通讯作者:
Xu, Kenong
影响因子:
7.2
作者:
Hanson, Johannes;Hanssen, Micha;Smeekens, Sjef
通讯作者:
Smeekens, Sjef
影响因子:
6.4
作者:
Bastias, Adriana;Lopez-Climent, Maria;Casaretto, Jose A.
通讯作者:
Casaretto, Jose A.
影响因子:
4.3
作者:
Berüter, J
通讯作者:
Berüter, J