skip to main content
Idioma:

Hydraulic Coupling of a Leafless Kauri Tree Remnant to Conspecific Hosts

Bader, M.K.-F. ; Leuzinger, S.

iScience, 2019-09, Vol.19, p.1238-1247 [Periódico revisado por pares]

United States: Elsevier Inc

Texto completo disponível

Citações Citado por
  • Título:
    Hydraulic Coupling of a Leafless Kauri Tree Remnant to Conspecific Hosts
  • Autor: Bader, M.K.-F. ; Leuzinger, S.
  • Assuntos: Biological Sciences ; Botany ; Plant Biology ; Plant Physiology
  • É parte de: iScience, 2019-09, Vol.19, p.1238-1247
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    Lead Contact
  • Descrição: Trees are commonly regarded as distinct entities, but the roots of many species fuse to form natural root grafts allowing the exchange of water, carbon, mineral nutrients, and microorganisms between individuals. Exploiting the phenomenon of leafless (photosynthetically inactive) tree remnants being kept alive by conspecifics, we show tight physiological coupling of a living kauri (Agathis australis) stump to conspecific neighbors. The trunk remnant displayed greatly reduced, inverted daily sap flow patterns compared with intact kauri trees. Its stem water potential showed strong diel variation with minima during daytime and maxima at night, coinciding with peak and minimal sap flow rates in neighbors, respectively. Sudden atmospherically driven changes in water relations in adjacent kauri trees were very rapidly and inversely mirrored in the living stump's water status. Such intimate hydrological coupling suggests a “communal physiology” among (conspecific) trees with far-reaching implications for our understanding of forest functioning, particularly under water shortage. [Display omitted] •A living kauri tree stump is physiologically tightly linked to conspecific neighbors•This suggests root grafting between live trees and living stumps•Stump water status responds inversely to changes in host tree physiology•The hydraulic coupling challenges our views on drought and pathogen impacts Biological Sciences; Plant Biology; Botany; Plant Physiology
  • Editor: United States: Elsevier Inc
  • Idioma: Inglês
Links
Voltar para lista de resultados

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.