TY - JOUR
T1 - Ethylene and ACC levels in developing grains are related to the poor appearance and milling quality of rice
AU - Zhang, Hao
AU - Tan, Guilu
AU - Wang, Zhiqin
AU - Yang, Jianchang
AU - ZHANG, Jianhua
N1 - Funding Information:
Acknowledgments The authors gratefully acknowledge the grants from the National Natural Science Foundation of China (30671225, 30771274, 30800670), the State Key Project of China (2006BAD02A13-3-2), the Natural Science Foundation of Jiangsu Province (BK2006069, BK2007071), Hong Kong University Grants Committee (AOE/B-07/99), and Hong Kong Baptist University Matching Research Fund.
PY - 2009/5
Y1 - 2009/5
N2 - The possible relationship between the levels of ethylene and 1-aminocylopropane-1-carboxylic acid (ACC) in the grains and the quality of rice (Oryza sativa L.) were investigated by using 12 rice cultivars. The results showed that both the ethylene evolution rate and ACC content in grains during the grain filling period correlated negatively with head rice production and positively with chalky kernels, chalky size, and chalkiness. The levels of ethylene and ACC were not significantly correlated with alkali spreading value and amylose content. Application of ethephon, an ethylene-releasing agent, or ACC to panicles at the early grain filling stage significantly reduced the rates of brown rice, milled rice, and head rice, and significantly increased the percentage of chalky kernels, chalky size, and chalkiness. Application of aminoethoxyvinylglycine, an inhibitor of ACC synthase, had the opposite effect. Chalkiness appears to be a senescence related phenomenon which is stimulated by ethylene. The results suggest that ethylene and ACC in grains play an important role in regulating rice quality, and that grain appearance and milling quality would be improved though the reduction of ethylene and ACC in grains during grain filling.
AB - The possible relationship between the levels of ethylene and 1-aminocylopropane-1-carboxylic acid (ACC) in the grains and the quality of rice (Oryza sativa L.) were investigated by using 12 rice cultivars. The results showed that both the ethylene evolution rate and ACC content in grains during the grain filling period correlated negatively with head rice production and positively with chalky kernels, chalky size, and chalkiness. The levels of ethylene and ACC were not significantly correlated with alkali spreading value and amylose content. Application of ethephon, an ethylene-releasing agent, or ACC to panicles at the early grain filling stage significantly reduced the rates of brown rice, milled rice, and head rice, and significantly increased the percentage of chalky kernels, chalky size, and chalkiness. Application of aminoethoxyvinylglycine, an inhibitor of ACC synthase, had the opposite effect. Chalkiness appears to be a senescence related phenomenon which is stimulated by ethylene. The results suggest that ethylene and ACC in grains play an important role in regulating rice quality, and that grain appearance and milling quality would be improved though the reduction of ethylene and ACC in grains during grain filling.
KW - 1-Aminocylopropane-1-carboxylic acid (ACC)
KW - Appearance quality
KW - Ethylene
KW - Grain filling
KW - Milling quality
KW - Rice (Oryza sativa)
UR - http://www.scopus.com/inward/record.url?scp=63949087858&partnerID=8YFLogxK
U2 - 10.1007/s10725-008-9354-8
DO - 10.1007/s10725-008-9354-8
M3 - Journal article
AN - SCOPUS:63949087858
SN - 0167-6903
VL - 58
SP - 85
EP - 96
JO - Plant Growth Regulation
JF - Plant Growth Regulation
IS - 1
ER -