Fungal endophytes nearly double minimum leaf conductance in seedlings of a neotropical tree species

Anne E Arnold, Bettina M J Engelbrecht

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Drought strongly influences plant phenology, growth and mortality in tropical forests, thereby shaping plant performance, population dynamics and community structure (Bunker & Carson 2005, Condit et al. 1995). Microbial symbionts of plants profoundly influence host water relations (Lösch & Gansert 2002), but are rarely considered in studies of tropical plant physiology. In particular, plant-fungus associations, which are ubiquitous in plant communities and especially common in tropical forests, play important and varied roles in plant water status. Fungal pathogens associated with roots, vascular tissue and foliage may interfere with water uptake and transport, increase rates of foliar transpiration, and induce xylem embolism and tissue death (Agrios 1997). In contrast, rhizosphere mutualists such as ecto- and arbuscular mycorrhizal fungi may benefit hosts by increasing surface area for water uptake, enhancing stomatal regulation of water loss, and increasing root hydraulic conductivity (Auge 2001, Lösch & Gansert 2002).

Original languageEnglish (US)
Pages (from-to)369-372
Number of pages4
JournalJournal of Tropical Ecology
Volume23
Issue number3
DOIs
StatePublished - May 2007

Fingerprint

leaf conductance
endophyte
endophytes
seedling
seedlings
water uptake
tropical forests
tropical forest
fungus
root hydraulic conductivity
embolism
water relations
water
plant physiology
vascular tissues
xylem
symbiont
symbionts
transpiration
phenology

Keywords

  • Cocoa
  • Endophytes
  • Minimum leaf conductance
  • Panama
  • Theobroma cacao
  • Water relations

ASJC Scopus subject areas

  • Ecology

Cite this

Fungal endophytes nearly double minimum leaf conductance in seedlings of a neotropical tree species. / Arnold, Anne E; Engelbrecht, Bettina M J.

In: Journal of Tropical Ecology, Vol. 23, No. 3, 05.2007, p. 369-372.

Research output: Contribution to journalArticle

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