Leaf Senescence of Soybean at Reproductive Stage is Associated with Induction of Autophagy-related Genes, GmATG8c, GmATG8i and GmATG4
| Autor: | Nang Myint Phyu Sin Htwe, Takashi Yuasa, Yushi Ishibashi, Hiroyuki Tanigawa, Munehiro Okuda, Shao-Hui Zheng, Mari Iwaya-Inoue |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Plant Production Science, Vol 14, Iss 2, Pp 141-147 (2011) |
| Druh dokumentu: | article |
| ISSN: | 1343-943X 1349-1008 |
| DOI: | 10.1626/pps.14.141 |
| Popis: | Autophagy appears to function in bulk protein degradation and N remobilization in senescence. Depodding of soybean suppresses N remobilization from leaves, leading to “green stem syndrome”. Expression of autophagy-related genes (ATGs) and N contents of the leaves and stem was analyzed in soybean plants from none (control), half (50% depodding) and all (100% depodding) of flowers and pods were removed at the reproductive 5 stage. Total N content and SPAD in leaves of the plant after 100% depodding were retained at a constant level and those after 50% depodding gradually decreased from 4 to 5 wk after depodding, while those in the control plants rapidly decreased during this period. Expression of GmATG8c and GmATG8i in leaves peaked at 4 wk in control while the gene expression increased gradually after 50% and 100% depodding. The transient up-regulation of ATGs and the decline of leaf N content and SPAD occurred simultaneously. These results indicated that ATGs are involved in leaf senescence and N remobilization from leaf to pod. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|