Document
type: Class

Seedlings from two Agave species differing in microhabitat evolve different tolerance mechanisms to drought and shade under nurse plants
type: Generically Dependent Continuant
accesstype: All Open Access, Bronze
type: Document
artnum: 151729
doi: 10.1016/j.flora.2020.151729
type: Thing
e iscopus: 2-s2.0-85097242994
most specific type: Article
estado: published
date time value: article date 6746
type: Information Content Entity
related by: authorship_44224
volume: 274
related by: authorship_44226
abstract: We studied two Agave species differing in microhabitat; when adult, A. striata is light-tolerant and A. salmiana is drought-tolerant. However, both species establish under nurse plants. The aim of this work was to investigate the ecophysiological mechanisms of these two species to tolerate different shade and water conditions at the seedling stage. Seedlings were grown for six months under two water treatments (well-irrigated and drought) and three shade treatments, denominated high shade (HS), medium shade (MS) and low shade (LS) (241, 563 and 804 µmol m−2 s−1 of photosynthetic photon flux density, respectively). Concentrations of chlorophylls a and b, total chlorophylls, carotenoids and water potential (Ψ) were analyzed. The decreasing shade levels in combination with the regime “well-irrigated” did promote increased concentration of carotenoids in A. salmiana but not in A. striata. Besides, the well-irrigated plants produced high concentration levels of chlorophyll b and total chlorophyll in both species, showing no changes due to shade treatments. Conversely, drought generated significantly low concentrations of the pigments in A. striata with no variations due to shade treatments. Furthermore, concentrations of the pigments of A. salmiana under drought at HS and MS were similar to those for well-irrigated plants, but diminished at LS. Likewise, drought reduced Ψ in A. striata but not in A. salmiana, regardless of the shade effect. These results indicate that the tolerance of seedlings to drought stress and decrease in shade in A. salmiana relates to its mechanisms for maintaining hydration, whereas in A. striata this depends on mechanisms that keep the concentration of pigments stable. Thus, Agave species evolve different mechanisms for tolerating drought and low solar radiation stress. © 2020
type: Entity
most specific type: Document
related by: authorship_44223
related by: authorship_44225
crisid: 6746
freetext keyword: Drought stress; Microenvironment; Photoprotective pigments; Photosynthetic pigments; Shade stress; Water potential chlorophyll; concentration (composition); drought stress; ecophysiology; light effect; microhabitat; nurse plant; seedling; solar radiation; tolerance
type: Continuant
type: Article
origen: scopus
has publication venue: Flora: Morphology, Distribution, Functional Ecology of Plants

Continuant
type: Class

Entity
type: Class

Generically Dependent Continuant
type: Class

individual
rights: termsOfUse
date: 2026-08-25T17:57:56
publisher: vivo
type: Document
label: RDF description of Seedlings from two Agave species differing in microhabitat evolve different tolerance mechanisms to drought and shade under nurse plants - http://orbis.uaslp.mx/vivo/individual/scopus6745

Article
type: Class

Information Content Entity
type: Class

Flora: Morphology, Distribution, Functional Ecology of Plants
type: Continuant
type: Information Content Entity
type: Generically Dependent Continuant
publication venue for: Seedlings from two Agave species differing in microhabitat evolve different tolerance mechanisms to drought and shade under nurse plants
type: Collection
type: Document
type: Thing
type: Entity
type: Periodical
type: Journal