| 硼对铝胁迫下杉木生长、生理和光合特性的影响 |
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| 引用本文： | 钟淑芳,钟明慧,刘子晗,吕宁宁,杨培蓉,郑雪燕,叶义全,许珊珊.硼对铝胁迫下杉木生长、生理和光合特性的影响[J].安徽农业大学学报,2024,51(1):1. |
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| 作者姓名： | 钟淑芳 钟明慧 刘子晗 吕宁宁 杨培蓉 郑雪燕 叶义全 许珊珊 |
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| 作者单位： | 福建农林大学林学院，福州 350002; 国家林草局杉木工程技术研究中心，福州 350002; 林木逆境生理生态及分子生物学福建省高校重点实验室，福州 350002;福建省洋口国有林场，顺昌353211 |
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| 基金项目： | 国家重点研发计划（2016YFD0600301）, 福建农林大学高峰学科建设项目 (71201800738)和福建农林大学科技创新专项基金(CXZX2020035A)共同资助。 |
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| 摘 要： | 为了研究硼对铝胁迫下杉木生长、生理和光合特性的影响，揭示硼介导的杉木耐铝调控机制，为进一步利用养分管理手段减轻杉木铝毒害提供参考，以3月龄幼苗为材料，共设置4个处理，对照（CK）、缺硼（-B）、缺硼加铝（-B+Al）和加硼加铝（+B+Al），分析不同处理间杉木生长、叶片光合和抗性生理指标的差异。结果表明：（1）与CK相比，胁迫处理均能显著抑制苗高生长，苗高降幅介于31.83%～55.56%之间，而且铝胁迫下，加硼（+B+Al）能显著缓解缺硼（-B+Al）引起的苗高生长、叶片丙二醛（MDA）、过氧化氢（H2O2）和光合色素含量下降；与-B+Al处理相比，+B+Al处理的苗高、MDA、H2O2、叶绿素和类胡萝卜素含量分别增加48.02%、24.18%、16.39%、17.16%和17.78%。（2）与CK相比，不同胁迫处理显著提高叶片超氧化物歧化酶、过氧化物酶、过氧化氢酶和抗坏血酸过氧化物酶活性，其活性大小均表现为：+B+Al＞-B+Al＞-B＞CK，增幅分别介于17.10%～128.87%、15.19%～152.10%、37.39%～412.11%和44.07%～271.66%之间。（3）杉木叶片净光合速率、水分利用效率、最大荧光、可变荧光、PSⅡ潜在光化学活性、PSⅡ最大光化学效率、光化学淬灭系数和实际最大量子产额在不同胁迫处理下较CK均出现不同程度下降，降幅分别介于51.06%～59.50%、2.43%～16.71%、7.07%～20.45%、7.80%～29.93%、27.16%～54.07%、2.53%～13.53%、4.66%～12.61%和4.25%～13.77%之间，而且-B+Al处理的降幅显著大于+B+Al处理。可见在铝胁迫下，与缺硼相比，外源加硼处理通过提高叶片抗氧化酶活性，降低叶片H2O2和MDA的积累，减轻H2O2诱导的叶片氧化损伤和光合色素的下降，提高叶片光合效率和光能利用率，促进碳同化产物合成，从而缓解铝胁迫引起的对生长的抑制。
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| 关 键 词： | 杉木 铝胁迫 硼，生长 生理 光合特性 |
Effects of boron on the growth, physiology and photosynthetic characteristics of Cunninghamia lanceolata under aluminum stress |
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| ZHONG Shufang,ZHONG Minghui,LIU Zihan,LYU Ningning,YANG Peirong,ZHENG Xueyan,YE Yiquan,XU Shanshan.Effects of boron on the growth, physiology and photosynthetic characteristics of Cunninghamia lanceolata under aluminum stress[J].Journal of Anhui Agricultural University,2024,51(1):1. |
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| Authors: | ZHONG Shufang ZHONG Minghui LIU Zihan LYU Ningning YANG Peirong ZHENG Xueyan YE Yiquan XU Shanshan |
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| Institution: | College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002; Chinese Fir Engineering and Technology Research Center of National Forestry and Grassland Administration, Fuzhou 350002; 3 University Key Laboratory of Forest Stress Physiology, Ecology and Molecular Biology of Fujian Province, Fuzhou 350002;Fujian Yangkou State-owned Forest Farm, Shunchang 353211 |
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| Abstract: | In order to reveal the regulatory mechanism of boron(B)-mediated aluminum (Al) tolerance in Cunninghamia lanceolata, and provide a reference for reducing Al toxicity of C. lanceolata by nutrient management, the effects of B on the growth, physiological and photosynthetic characteristics of C. lanceolata under Al stress were investigated in this study. A total of four treatments with control (CK), B deficiency (-B), B deficiency plus Al (-B+Al) and B plus Al (+B+Al) were set by using three-month old of C. lanceolata seedlings to investigate the different responses of growth, photosynthetic physiology and resistant physiology of C.lanceolata among different treatments. The results showed: (1) The growth of the seedlings height was significantly inhibited under different stress treatments as compared with CK, and which was decreased by 31.83% - 55.56%, moreover, under Al stress, |
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| Keywords: | Cunninghamia lanceolata aluminum stress boron growth physiology photosynthetic characteristics |
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