降水、氮沉降对尖喙牻牛儿苗隔代生理可塑性的影响  

Effects of precipitation and nitrogen deposition on transgenerational plasticity in alternate generations of Erodium oxyrhinchum

作　　者：沙涛 张玲卫 刘会良[2,3,5,6] 张岚 卢妤婷 周鑫宇 文晓虎 张元明 SHA Tao;ZHANG Lingwei;LIU Huiliang;ZHANG Lan;LU Yuting;ZHOU Xinyu;WEN Xiaohu;ZHANG Yuanming(College of Resources and Environment,Xinjiang Agricultural University,Urumqi 830052,Xinjiang,China;State Key Laboratory of Desert and Oasis Ecology,Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,Xinjiang,China;Xinjiang Key Laboratory of Biodiversity Conservation and Application in Arid Lands,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830000,Xinjiang,China;College of Life Science,Xinjiang Agricultural University,Urumqi 830052,Xinjiang,China;University of Chinese Academy of Sciences,Beijing 100049,China;Xinjiang Field Scientific Observation Research Station of Tianshan Wild Fruit Forest Ecosystem,Yili Botanical Garden,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Xinyuan 835800,Xinjiang,China)

机构地区：[1]新疆农业大学资源与环境学院,新疆乌鲁木齐830052 [2]荒漠与绿洲生态国家重点实验室,干旱区生态安全与可持续发展重点实验室,中国科学院新疆生态与地理研究所,新疆乌鲁木齐830011 [3]新疆干旱区生物多样性保育与应用重点实验室,中国科学院新疆生态与地理研究所,新疆乌鲁木齐830000 [4]新疆农业大学生命科学学院,新疆乌鲁木齐830052 [5]中国科学院大学,北京100049 [6]天山野果林生态系统新疆野外科学观测研究站,伊犁植物园,中国科学院新疆生态与地理研究所,新疆新源835800

出　　处：《干旱区研究》2024年第10期1753-1766,共14页Arid Zone Research

基　　金：国家自然科学基金项目(32160256,32171513,31971428);新疆维吾尔自治区天山英才项目(2023TSYCCX0082)。

摘　　要：隔代可塑性是后代免受环境胁迫的有效方式,通过增加子代与环境匹配的可能性来缓冲环境变化对子代的影响,提高子代对所处环境的适应度。因此,本研究以生长发育快、对环境响应敏感的一年生短命植物优势种尖喙牻牛儿苗(Erodium oxyrhinchum)作为研究材料,结合增水、增氮处理,从短命植物生理生化指标角度分析短命植物代际间对气候因子的响应差异,尝试明确气候因子对荒漠短命植物隔代生理可塑性的影响。结果表明:(1)增水处理显著提高了两代植株的可溶性糖(SS)含量、其余生理指标呈代际差异性,增水处理下可溶性蛋白(SP)、可溶性糖(SS)、过氧化物酶(POD)呈隔代适应性。(2)增氮处理显著抑制亲代植株的超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)、丙二醛(MDA)含量,对子代植株过氧化氢酶(CAT)、活性氧(ROS)含量呈抑制作用,增氮处理下可溶性蛋白(SP)、超氧化物歧化酶(SOD)、过氧化物酶(POD)呈隔代适应性。(3)水氮互作处理显著促进亲代植株的过氧化物酶(POD)、过氧化氢酶(CAT)、活性氧(ROS)含量,但显著抑制超氧化物歧化酶(SOD)含量。对子代植株超氧化物歧化酶(SOD)、过氧化物酶(POD)含量呈促进作用,过氧化氢酶(CAT)、丙二醛(MDA)、活性氧(ROS)含量呈抑制作用,水氮互作处理下可溶性蛋白(SP)、过氧化物酶(POD)呈隔代适应性。总体而言,降水、氮沉降对尖喙牻牛儿苗隔代生理可塑性具有显著影响,尖喙牻牛儿苗生理生化指标对增水、增氮以及水氮互作处理呈现不同的响应差异。未来降水、氮沉降的增加可能改变尖喙牻牛儿苗后代的生态适应能力和策略,进而改变其种群未来发展趋势。Transgenerational plasticity is an effective method to protect offspring from environmental stress,buffering the impact of environmental changes on the offspring by increasing the probability of matching the offspring with the environment and improving the adaptability of the offspring to the environment in which they live.Therefore,this study was conducted to analyze the transgenerational differences in the response of ephemeral plants to climatic factors from the perspective of their physiological and biochemical indexes and to elucidate the effects of climatic factors on the physiological plasticity of desert ephemeral plants in transgenerational periods.For this purpose,we used Erodium oxyrhinchum,a dominant species of annual ephemeral plants with rapid growth and development and sensitive response to the environment,in combination with water and nitrogen increase treatments.We also clarified the effect of climatic factors on the physiological plasticity of desert ephemeral plants across generations.Results showed that(1)the water addition treatment significantly increased the soluble sugar(SS)content of two generations of plants,the remaining physiological indexes exhibited transgenerational differences,and the soluble protein(SP),SS,and peroxidase(POD)exhibited transgenerational adaptations under the water addition treatment.(2)The nitrogen enrichment treatment significantly inhibited the production of superoxide dismutase(SOD),POD,catalase(CAT),and malondialdehyde(MDA)in the parental plants and inhibited the production of CAT and reactive oxygen species(ROS)in the offspring plants,and the contents of SP,SOD,and POD exhibited transgenerational adaptations.(3)The water-nitrogen interaction treatment significantly promoted the production of POD,CAT,and ROS in the progeny plants but significantly suppressed the production of SOD.The production of SOD and POD was promoted,and that of CAT,MDA,and ROS was inhibited in offspring plants.SP and POD were spaced-adapted under the water-nitrogen interaction treatment.O

关 键 词：降水 氮沉降 短命植物 尖喙牻牛儿苗 隔代生理可塑性 

分 类 号：Q948[生物学—植物学]