Spirolactone iridoids might be responsible for the antileishmanial activity of a Peruvian traditional remedy made with Himatanthus sucuuba (Apocynaceae).
- D. Castillo, J. Arévalo, M. Sauvain
- Medicine, BiologyJournal of Ethnopharmacology
- 13 June 2007
Photosynthetic responses of the tropical spiny shrub Lycium nodosum (Solanaceae) to drought, soil salinity and saline spray.
- W. Tezara, D. Martínez, E. Rengifo, A. Herrera
- Medicine, BiologyAnnals of Botany
- 1 December 2003
Observations suggested that L. nodosum is tolerant both to WD and salinity, and osmotic adjustment may partly explain the relative maintenance of A and gs in the SS and SI treatments and the tolerance to salinity of plants of this species in coastal habitats.
Lack of downregulation of photosynthesis in a tropical root crop, cassava, grown under an elevated CO2 concentration.
- M. Fernández, W. Tezara, E. Rengifo, A. Herrera
- Environmental ScienceFunctional Plant Biology
- 1 July 2002
The absence of downregulation of photosynthesis was associated with a decrease in leaf sugar and starch contents of plants grown at elevated [CO2], which suggests a favourable source/sink relationship.
Photosynthesis and photoinhibition in two xerophytic shrubs during drought
- W. Tezara, Oranys Marín, E. Rengifo, D. Martínez, A. Herrera
- BiologyPhotosynthetica (Praha)
- 1 March 2005
Drought affected the capacity of energy dissipation of leaves, judging from the changes in the photochemical (qP) and non-photochemical quenching (NPQ) coefficients, and imposed an important limitation on carbon assimilation during drought in the species studied.
Changes with seasonal flooding in sap flow of the tropical flood-tolerant tree species, Campsiandra laurifolia
- A. Herrera, W. Tezara, E. Rengifo, S. Flores
- Environmental ScienceTrees
- 28 February 2008
In order to determine how flooding affects sap flow and hydraulic conductivity of the tolerant species, Campsiandra laurifolia, trees growing in a tropical seasonally flooded forest in Venezuela were…
Water relations, chlorophyll a fluorescence, and contents of saccharides in tree species of a tropical forest in response to flood
- E. Rengifo, W. Tezara, A. Herrera
- BiologyPhotosynthetica (Praha)
- 1 June 2005
We studied the seasonal changes in water relations, chlorophyll a fluorescence, and leaf saccharide contents of the tropical flood-tolerant trees Acosmium nitens, Campsiandra laurifolia, Eschweilera…
Seasonal changes in photosynthesis of trees in the flooded forest of the Mapire River.
- M. Fernández, A. Pieters, A. Herrera
- Environmental ScienceTree Physiology
- 1 February 1999
An increase in xylem water potential with depth of water column was found for all species (with the possible exception of P. ovatifolium), indicating that flooding does not cause water stress in these trees.
Aluminum accumulation and its relationship with mineral plant nutrients in 12 pteridophytes from Venezuela
- E. Olivares, E. Peña, E. Rengifo
- Environmental Science
- 2009
Stomatal and non-stomatal limitations of photosynthesis in trees of a tropical seasonally flooded forest.
- A. Herrera, W. Tezara, Oranys Marín, E. Rengifo
- Environmental SciencePhysiologia Plantarum : An International Journal…
- 1 September 2008
A was positively correlated to light-saturated electron transport rate, suggesting that part of the decrease in A under flooding was due to impairment of photosynthetic capacity.
Effects of a natural source of very high CO2 concentration on the leaf gas exchange, xylem water potential and stomatal characteristics of plants of Spatiphylum cannifolium and Bauhinia multinervia
- M. Fernández, A. Pieters, A. Herrera
- Environmental Science
- 1 April 1998
It is indicated that very high CO2 concentrations did not inhibit photosynthesis in these species, and that growth under highCO2 allowed plants to attain carbon balances higher than those of plants growing under low CO2.
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