title: Reactive Oxygen Species Function to Mediate the Fe Deficiency Response in an Fe-Efficient Apple Genotype: An Early Response Mechanism for Enhancing Reactive Oxygen Production.
abstract: Reactive oxygen species (ROS) are important signaling molecules in plants that contribute to stress acclimation. This study demonstrated that ROS play a critical role in Fe deficiency-induced signaling at an early stage inMalus xiaojinensis. Once ROS production has been initiated, prolonged Fe starvation leads to activation of ROS scavenging mechanisms. Further, we demonstrated that ROS scavengers are involved in maintaining the cellular redox homeostasis during prolonged Fe deficiency treatment. Taken together, our results describe a feedback repression loop for ROS to preserve redox homeostasis and maintain a continuous Fe deficiency response in the Fe-efficient woody plantM. xiaojinensis. More broadly, this study reveals a new mechanism in which ROS mediate both positive and negative regulation of plant responses to Fe deficiency stress.
authors.affiliation: Institute for Horticultural Plants, College of Horticulture, China Agricultural UniversityBeijing, China; Key Laboratory of Physiology and Molecular Biology of Tree Fruit of Beijing, China Agricultural UniversityBeijing, China; Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, China Agricultural UniversityBeijing, China.
authors.forename: Chaohua
authors.initials: C
authors.lastname: Sun
authors.affiliation: Institute for Horticultural Plants, College of Horticulture, China Agricultural UniversityBeijing, China; Key Laboratory of Physiology and Molecular Biology of Tree Fruit of Beijing, China Agricultural UniversityBeijing, China; Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, China Agricultural UniversityBeijing, China.
authors.forename: Ting
authors.initials: T
authors.lastname: Wu
authors.affiliation: Institute for Horticultural Plants, College of Horticulture, China Agricultural UniversityBeijing, China; Key Laboratory of Physiology and Molecular Biology of Tree Fruit of Beijing, China Agricultural UniversityBeijing, China; Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, China Agricultural UniversityBeijing, China.
authors.forename: Longmei
authors.initials: L
authors.lastname: Zhai
authors.affiliation: Institute for Horticultural Plants, College of Horticulture, China Agricultural UniversityBeijing, China; Key Laboratory of Physiology and Molecular Biology of Tree Fruit of Beijing, China Agricultural UniversityBeijing, China; Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, China Agricultural UniversityBeijing, China.
authors.forename: Duyue
authors.initials: D
authors.lastname: Li
authors.affiliation: Institute for Horticultural Plants, College of Horticulture, China Agricultural UniversityBeijing, China; Key Laboratory of Physiology and Molecular Biology of Tree Fruit of Beijing, China Agricultural UniversityBeijing, China; Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, China Agricultural UniversityBeijing, China.
authors.forename: Xinzhong
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Institute for Horticultural Plants, College of Horticulture, China Agricultural UniversityBeijing, China; Key Laboratory of Physiology and Molecular Biology of Tree Fruit of Beijing, China Agricultural UniversityBeijing, China; Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, China Agricultural UniversityBeijing, China.
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Xu
authors.affiliation: Institute for Horticultural Plants, College of Horticulture, China Agricultural UniversityBeijing, China; Key Laboratory of Physiology and Molecular Biology of Tree Fruit of Beijing, China Agricultural UniversityBeijing, China.
authors.forename: Huiqin
authors.initials: H
authors.lastname: Ma
authors.affiliation: Institute for Horticultural Plants, College of Horticulture, China Agricultural UniversityBeijing, China; Key Laboratory of Physiology and Molecular Biology of Tree Fruit of Beijing, China Agricultural UniversityBeijing, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Institute for Horticultural Plants, College of Horticulture, China Agricultural UniversityBeijing, China; Key Laboratory of Physiology and Molecular Biology of Tree Fruit of Beijing, China Agricultural UniversityBeijing, China.
authors.forename: Zhenhai
authors.initials: Z
authors.lastname: Han
keywords: Fe deficiency; Malus xiaojinensis; ROS; early response; woody plant