气候变化领域集成服务门户(CCPortal): Growth, morphological, metabolic and photosynthetic responses of clones of eucalyptus to glyphosate

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DOI	10.1016/j.foreco.2020.118218
	Growth, morphological, metabolic and photosynthetic responses of clones of eucalyptus to glyphosate
	Cerveira Junior W.R.; Costa Y.K.S.D.; Carbonari C.A.; Duke S.O.; Alves P.L.D.C.A.; Carvalho L.B.D.
发表日期	2020
ISSN	0378-1127
卷号	470-471
英文摘要	We hypothesized that eucalyptus has clone-dependent responses to glyphosate, and such differential responses might be associated with morphological, metabolic and/or photosynthetic changes. Experiments were carried out under controlled conditions of temperature, photoperiod and nutrition, focusing on evaluating the response of Eucalyptus × urograndis clones (GG100 and I144) to increasing doses of glyphosate (0–1440 g ha−1 acid equivalent – AE) and to test whether a differential plant response would be associated to alterations in leaf morphology, plant and herbicide metabolism and photosynthesis. There was a significant reduction of plant height, stem diameter, number of leaves, leaf area and shoot dry mass caused by low doses of glyphosate (≤180 g AE ha−1, while a strong plant growth reduction (~60%) was caused by glyphosate field doses (≥720 g AE ha−1), in both clones. The GG100 clone was more susceptible to glyphosate field doses, while the I144 clone was more susceptible to glyphosate low doses. The stomatal index increased by 31% and the nervure thickness was reduced by 17% at 30 days after application of glyphosate at 180 g AE ha−1 (DAA) in the GG100 clone. Traces of glyphosate (<28 g mg−1 of dry mass) were found in leaf tissues of both clones at 1 DAA. Shikimic acid accumulated earlier (after 1 DAA) and in greater amounts (90%) in the I144 clone. Aminomethylphosphonic acid (AMPA) was not detected in either treated clone. The CO2 assimilation rate, transpiration rate and stomatal conductance were reduced earlier (after 1 DAA) and more intensely (65%) in the I144 clone. The clone-dependent response is apparently associated with changes in plant metabolism related to glyphosate mode of action and gas exchange response differences between the clones. © 2020 Elsevier B.V.
关键词	Herbicides Metabolism Plants (botany)Aminomethylphosphonic acid Assimilation rate Clones of Eucalyptus Controlled conditions Differential response Photosynthetic response Stomatal conductance Transpiration rates Cloning clone evergreen tree gas exchange glyphosate growth metabolism morphology photosynthesis Clones Eucalyptus Herbicides Leaves Metabolism Plants Reduction Shikimic Acid Eucalyptus Eucalyptus urograndis
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132773
推荐引用方式 GB/T 7714	Cerveira Junior W.R.,Costa Y.K.S.D.,Carbonari C.A.,et al. Growth, morphological, metabolic and photosynthetic responses of clones of eucalyptus to glyphosate[J]. Forest Ecology and Management,2020,470-471.
APA	Cerveira Junior W.R.,Costa Y.K.S.D.,Carbonari C.A.,Duke S.O.,Alves P.L.D.C.A.,&Carvalho L.B.D..(2020).Growth, morphological, metabolic and photosynthetic responses of clones of eucalyptus to glyphosate.,470-471.
MLA	Cerveira Junior W.R.,et al."Growth, morphological, metabolic and photosynthetic responses of clones of eucalyptus to glyphosate".470-471(2020).