A Preliminary Study on Physiological and Molecular Effects of Iron Deficiency in Fuji/Chistock 1 |
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| Authors: | Changjiang Yu Yi Wang Xinzhong Zhang |
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| Institution: | 1. Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Nutrition and Physiology), Ministry of Agriculture, China Agricultural University, Beijing, China;2. Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China |
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| Abstract: | In order to get experimental data on apple rootstock with iron-efficient genotypes capable of improving scion resistance to iron deficiency, this experiment was conducted on the physiological and molecular characteristics of Fuji/ Chistock 1 (F/C) under different iron conditions and compared it to Fuji/ M. Baccata (F/B). F/C was less sensitive to iron deficiency than F/B. F/B showed chlorosis after 25 days under iron-deficient conditions, but F/C showed no phenotypic changes, even after 40 days. The shoot and leaf area growth of F/C were respectively 5cm and 1000 mm2 higher than those of F/B, regardless of the iron-deficient or iron-efficient conditions. The young leaf chlorophyll and active iron of F/C were 5 SPAD and 5 mg kg?1 higher than those of F/B, either in iron-deficient or iron-efficient conditions. The expression of YSL5 and CS1 showed the same pattern. The enhancement expression of iron transport genes may be one explanation for these findings. |
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| Keywords: | graft Malus response to iron deficiency rootstock |
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