Nitric oxide counters ethylene effects on ripening fruits

被引：88

作者：

Manjunatha, Girigowda ^{[1
]}

Gupta, Kapuganti J. ^{[2
]}

Lokesh, Veeresh ^{[1
]}

Mur, Luis A. J. ^{[3
]}

Neelwarne, Bhagyalakshmi ^{[1
]}

机构：

[1] Cent Food Technol Res Inst, Plant Cell Biotechnol Dept, Mysore, Karnataka, India

[2] Univ Rostock, Dept Plant Physiol, Rostock, Germany

[3] Aberystwyth Univ, IBERS, Aberystwyth, Dyfed, Wales

来源：

PLANT SIGNALING & BEHAVIOR | 2012年 / 7卷 / 04期

关键词：

nitric oxide; ethylene; fruit ripening; reactive oxygen species;

D O I：

10.4161/psb.19523

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Ethylene plays a key role in promoting fruit ripening, so altering its biosynthesis/signaling could be an important means to delay this process. Nitric oxide (NO)-generated signals are now being shown to regulate ethylene pathways. NO signals have been shown to transcriptionally repress the expression of genes involved in ethylene biosynthesis enzymes and posttranslationally modify methionine adenosyl transferase (MAT) activity through S- nitrosylation to reduce the availably of methyl groups required to produce ethylene. Additionally, NO crosstalks with plant hormones and other signal molecules and act to orchestrate the suppression of ethylene effects by modulating enzymes/proteins that are generally triggered by ethylene signaling at post-climacteric stage. Thus, medication of endogenous NO production is suggested as a strategy to postpone the climacteric stage of many tropical fruits.

引用

页码：476 / 483

页数：8

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