The Ethylene Signal Mediates Induction ofGmATG8iin Soybean Plants under Starvation Stress | Zendy

Munehiro Okuda | Zendy; Myint Phyu Sin Htwe NANG | Zendy; K. Oshima | Zendy; Y. Ishibashi | Zendy; ShaoHui Zheng | Zendy; Takashi Yuasa | Zendy; Mari IwayaInoue | Zendy

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The Ethylene Signal Mediates Induction ofGmATG8iin Soybean Plants under Starvation Stress

Author(s) -

Munehiro Okuda,

Myint Phyu Sin Htwe NANG,

K. Oshima,

Y. Ishibashi,

ShaoHui Zheng,

Takashi Yuasa,

Mari IwayaInoue

Publication year - 2011

Publication title -

bioscience biotechnology and biochemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.509

H-Index - 116

eISSN - 1347-6947

pISSN - 0916-8451

DOI - 10.1271/bbb.110086

Subject(s) - starvation , ethylene , gene expression , transcription factor , senescence , autophagy , microbiology and biotechnology , gene , biology , biochemistry , sucrose , starvation response , transcription (linguistics) , downregulation and upregulation , chemistry , endocrinology , apoptosis , linguistics , philosophy , catalysis

In higher plants, autophagy-related genes (ATGs) appear to play important roles in development, senescence, and starvation responses. Hormone signals underlying starvation-induced gene expression are involved in the expression of ATGs. An effect of starvation stress on the expression of ATGs and ethylene-related genes in young seedlings of soybean (Glycine max [L.] Merr. cv. Fukuyutaka) was analyzed. Reverse transcription-polymerase chain reaction (RT-PCR) showed that the expression levels of GmATG8i and GmATG4 increase in a starvation medium, but at a null or marginal level in a sucrose/nitrate-rich medium. The expression of GmACC synthase and GmERF are also upregulated in the starvation medium. In addition, immunoblot revealed that ethylene insensitive 3 (Ein3), an ethylene-induced transcription factor are accumulated in seedlings subjected to severe starvation stress. These results indicate that starvation stress stimulates the expression of GmATG8i and ethylene signal-related genes. Since the ethylene signal is involved in senescence and various environmental stresses, it is possible that starvation stress-induced autophagy is partly mediated by the ethylene signaling.

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