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.
英文关键词	Dose-response; Eucalyptus urograndis; Herbicide; N-(phosphonomethyl)-glycine; Plant metabolism; Plant physiology
语种	英语
scopus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
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155222
作者单位	São Paulo State University (Unesp), School of Agricultural and Veterinarian Sciences, Jaboticabal, SP 14884-900, Brazil; São Paulo State University (Unesp), School of Agriculture, Botucatu, SP 18610-307, Brazil; United States Department of Agriculture/NPURU - Natural Product Utilization Research Unit, University, MS 38677, United States
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],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.Forest Ecology and Management,470-471.
MLA	Cerveira Junior W.R.,et al."Growth, morphological, metabolic and photosynthetic responses of clones of eucalyptus to glyphosate".Forest Ecology and Management 470-471(2020).