A. d. R. Nina Junior, J. M. F. Maia, S. V. C. Martins, N. V. dos Santos Nina, K. C. P. da Costa, J. C. de Carvalho, M. Schramm Mielke, A. Nunes-Nesi, W. L. Araújo, J. F. de Carvalho Gonçalves
{"title":"Differential photosynthetic plasticity of Amazonian tree species in response to light environments","authors":"A. d. R. Nina Junior, J. M. F. Maia, S. V. C. Martins, N. V. dos Santos Nina, K. C. P. da Costa, J. C. de Carvalho, M. Schramm Mielke, A. Nunes-Nesi, W. L. Araújo, J. F. de Carvalho Gonçalves","doi":"10.1111/plb.13632","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>\n \n </p><ul>\n \n \n <li>To investigate how and to what extent there are differences in the photosynthetic plasticity of trees in response to different light environments, six species from three successional groups (late successional, mid-successional, and pioneers) were exposed to three different light environments [deep shade – DS (5% full sunlight – FS), moderate shade – MS (35% FS) and full sunlight – FS].</li>\n \n \n <li>Maximum net photosynthesis (<i>A</i><sub>max</sub>), leaf N partitioning, stomatal, mesophile, and biochemical limitations (SL, ML, and BL, respectively), carboxylation velocity (<i>V</i><sub>cmax</sub>), and electron transport (<i>J</i><sub>max</sub>) rates, and the state of photosynthetic induction (IS) were evaluated.</li>\n \n \n <li>Higher values of <i>A</i><sub>max</sub>, <i>V</i><sub>cmax</sub>, and <i>J</i><sub>max</sub> in FS were observed for pioneer species, which invested the largest amount of leaf N in Rubisco. The lower IS for pioneer species reveals its reduced ability to take advantage of sunflecks. In general, the main photosynthetic limitations are diffusive, with SL and ML having equal importance under FS, and ML decreasing along with irradiance. The leaf traits, which are more determinant of the photosynthetic process, respond independently in relation to the successional group, especially with low light availability.</li>\n \n \n <li>An effective partitioning of leaf N between photosynthetic and structural components played a crucial role in the acclimation process and determined the increase or decrease of photosynthesis in response to the light conditions.</li>\n </ul>\n \n </div>","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":null,"pages":null},"PeriodicalIF":4.2000,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plant Biology","FirstCategoryId":"99","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/plb.13632","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
To investigate how and to what extent there are differences in the photosynthetic plasticity of trees in response to different light environments, six species from three successional groups (late successional, mid-successional, and pioneers) were exposed to three different light environments [deep shade – DS (5% full sunlight – FS), moderate shade – MS (35% FS) and full sunlight – FS].
Maximum net photosynthesis (Amax), leaf N partitioning, stomatal, mesophile, and biochemical limitations (SL, ML, and BL, respectively), carboxylation velocity (Vcmax), and electron transport (Jmax) rates, and the state of photosynthetic induction (IS) were evaluated.
Higher values of Amax, Vcmax, and Jmax in FS were observed for pioneer species, which invested the largest amount of leaf N in Rubisco. The lower IS for pioneer species reveals its reduced ability to take advantage of sunflecks. In general, the main photosynthetic limitations are diffusive, with SL and ML having equal importance under FS, and ML decreasing along with irradiance. The leaf traits, which are more determinant of the photosynthetic process, respond independently in relation to the successional group, especially with low light availability.
An effective partitioning of leaf N between photosynthetic and structural components played a crucial role in the acclimation process and determined the increase or decrease of photosynthesis in response to the light conditions.
期刊介绍:
Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology.
Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.