Responses of Aerobic Rice (Oryza sativa L.) to Iron Deficiency

doi:10.1016/S1671-2927(00)8616

Journal of Integrative Agriculture ›› 2012, Vol. 12 ›› Issue (6): 938-945.DOI: 10.1016/S1671-2927(00)8616

Responses of Aerobic Rice (Oryza sativa L.) to Iron Deficiency

SHI Rong-li, FAN Xiao-yun, ZHANG Fu-suo, ZOU Chun-qin

Key Laboratory of Plant-Soil Interaction, Ministry of Education/Center for Resources, Environment and Food Security, Department of Plant Nutrition, China Agricultural University, Beijing 100193, P.R.China

收稿日期:2011-03-31 出版日期:2012-06-01 发布日期:2012-07-20
通讯作者: ZOU Chun-qin, Tel: +86-10-62733539, Fax: +86-10-62731016, E-mail: zcq0206@cau.edu.cn
作者简介:SHI Rong-li, E-mail: shi80@126.com
基金资助:
This research was supported by National Basic Research Program of China (973 Program, 2009CB118605), the National Natural Science Foundation of China (30571106) and the Innovative Group Grant of Natural Science Foundation of China (30821003).

Responses of Aerobic Rice (Oryza sativa L.) to Iron Deficiency

SHI Rong-li, FAN Xiao-yun, ZHANG Fu-suo, ZOU Chun-qin

Key Laboratory of Plant-Soil Interaction, Ministry of Education/Center for Resources, Environment and Food Security, Department of Plant Nutrition, China Agricultural University, Beijing 100193, P.R.China

Received:2011-03-31 Online:2012-06-01 Published:2012-07-20
Contact: ZOU Chun-qin, Tel: +86-10-62733539, Fax: +86-10-62731016, E-mail: zcq0206@cau.edu.cn
About author:SHI Rong-li, E-mail: shi80@126.com
Supported by:
This research was supported by National Basic Research Program of China (973 Program, 2009CB118605), the National Natural Science Foundation of China (30571106) and the Innovative Group Grant of Natural Science Foundation of China (30821003).

摘要/Abstract

摘要： Aerobic rice has the advantage of saving water. Most published work has focused on improving its yield, while few reported on its micronutrient status. In fact, Fe deficiency is a common nutritional problem in the production of aerobic rice. Shortterm hydroponic culture experiments were conducted to study the response of aerobic rice to Fe deficiency and the effect of root exudates from Fe-deficient wheat on its Fe uptake ability. The results indicate that the amount of phytosiderophores (PS) released from aerobic rice did not increase under Fe deficient conditions. The Fe(III) reducing capacity of Fe-deficient aerobic rice did not increase and the solution pH did not decrease significantly. What’s more, no obvious swelling was observed in the root tips. Aerobic rice did not show special responses to improve their Fe nutrition under Fe deficiency as both strategy I and II plants though they were very sensitive to Fe deficiency. This may be a reason which causes Fe deficiency problem in aerobic rice. However, root exudates from Fe-deficient wheat (PSw) could improve its Fe nutrition in the presence of insoluble Fe(OH)3. This suggests that aerobic rice could utilize Fe activated by PSw.

关键词: aerobic rice, Fe(III)-reduction, iron nutrition, phytosiderophore release, root tip swelling

Abstract: Aerobic rice has the advantage of saving water. Most published work has focused on improving its yield, while few reported on its micronutrient status. In fact, Fe deficiency is a common nutritional problem in the production of aerobic rice. Shortterm hydroponic culture experiments were conducted to study the response of aerobic rice to Fe deficiency and the effect of root exudates from Fe-deficient wheat on its Fe uptake ability. The results indicate that the amount of phytosiderophores (PS) released from aerobic rice did not increase under Fe deficient conditions. The Fe(III) reducing capacity of Fe-deficient aerobic rice did not increase and the solution pH did not decrease significantly. What’s more, no obvious swelling was observed in the root tips. Aerobic rice did not show special responses to improve their Fe nutrition under Fe deficiency as both strategy I and II plants though they were very sensitive to Fe deficiency. This may be a reason which causes Fe deficiency problem in aerobic rice. However, root exudates from Fe-deficient wheat (PSw) could improve its Fe nutrition in the presence of insoluble Fe(OH)3. This suggests that aerobic rice could utilize Fe activated by PSw.

Key words: aerobic rice, Fe(III)-reduction, iron nutrition, phytosiderophore release, root tip swelling

SHI Rong-li, FAN Xiao-yun, ZHANG Fu-suo, ZOU Chun-qin. Responses of Aerobic Rice (Oryza sativa L.) to Iron Deficiency[J]. Journal of Integrative Agriculture, 2012, 12(6): 938-945.

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Responses of Aerobic Rice (Oryza sativa L.) to Iron Deficiency

Responses of Aerobic Rice (Oryza sativa L.) to Iron Deficiency

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