Influence of root interaction in eucalyptus clones under two environmental conditions

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dc.contributor.authorToledo, Gabriel R. A. de
dc.contributor.authorSouza, Gustavo M.
dc.contributor.authorBertolli, Suzana C. [UNESP]
dc.contributor.authorEdwards, D.
dc.contributor.authorOldroyd, G.
dc.contributor.institutionLab Plant Intelligence & Ecophysiol Ulrich Lutgge
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-11-26T16:54:51Z
dc.date.available2018-11-26T16:54:51Z
dc.date.issued2015-01-01
dc.description.abstractThe global climate changes likely will alters water availability to plants. This makes relevant to investigate how plants manage water use. Competition for limited resources is constant in plant life. Competition for water occurs among roots and is related with the ability of plants to discriminate self from nonself roots. Even clones have such ability, allowing them to compete, or not, depending on resources availability. Therefore, we investigated how self/nonself discrimination ability influences the establishment of interaction among cloned plants under two water regimes. An experiment was performed with the urograndis hybrid 'I 144' (Eucalyptus grandis & Eucalyptus urophila) from a unique clonal garden. Roots were pruned, letting only two similar roots per plant. They were arranged in two types of triplets: self and nonself ones (Figure 1). The plants were grown during 60 days under two different water regimes: well-watered (WW) and water-deficit (WD). Biometrics averages were compared by two-way-ANOVA, and Tukey test (p<0.05). Self-WD decreased total biomass (26%), root biomass (37%), leaf biomass (28%) and leaf number (16%) compared with self-WW. Non-self-WD decreased leaf number in 24%, compared with non-self-WW (Table 1). Non-self-WW decreased total biomass, leaf biomass, stem biomass, leaf area by 24%, and height (9%), compared with self-WW. Non-self-WD decreased branch mass (13%) and leaf number (29%), compared with self-WD. The root interaction influenced the behavior of plants, as demonstrated by differentiated development between self and nonself treatments. There was competition in non-self-WW triplets, since plants accumulated less total biomass than self-WW. There was no competition in non-self-WD, because plants accumulated the same total biomass than self-WD. Actually, we suggest that these plants may have collaborated. This behavior was already reported to clones under resource limitations. Switch between competition and collaboration may be a frequent response of plants to global climate change depending on their neighborhood. (C) 2015 The Authors. Published by Elsevier B.Ven
dc.description.affiliationLab Plant Intelligence & Ecophysiol Ulrich Lutgge, Rodovia Raposo Tavares,Km 572, BR-19067175 Presidente Prudente, SP, Brazil
dc.description.affiliationUniv Estadual Paulista UNESP, Dept Bot, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista UNESP, Dept Bot, BR-13506900 Rio Claro, SP, Brazil
dc.format.extent223-224
dc.identifierhttp://dx.doi.org/10.1016/j.proenv.2015.07.283
dc.identifier.citationAgriculture And Climate Change - Adapting Crops To Increased Uncertainty (agri 2015). Amsterdam: Elsevier Science Bv, v. 29, p. 223-224, 2015.
dc.identifier.doi10.1016/j.proenv.2015.07.283
dc.identifier.issn1878-0296
dc.identifier.urihttp://hdl.handle.net/11449/161802
dc.identifier.wosWOS:000380953000123
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofAgriculture And Climate Change - Adapting Crops To Increased Uncertainty (agri 2015)
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectDrought
dc.subjectPlant behaviour
dc.subjectEucalyptus urograndis
dc.subjectRoot ecology
dc.subjectSelf/nonself discrimination
dc.titleInfluence of root interaction in eucalyptus clones under two environmental conditionsen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.

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