Crassulacean acid metabolism and fitness under water deficit stress: if not for carbon gain, what is facultative CAM good for?
- A. Herrera
- Environmental ScienceAnnals of Botany
- 1 February 2009
It is concluded that in some species, but not all, facultative and cycling CAM contribute, rather than to increase carbon balance, to increase water-use efficiency, water absorption, prevention of photoinhibition and reproductive output.
Contribution of stem CO2 fixation to whole-plant carbon balance in nonsucculent species
- E. Avila, A. Herrera, W. Tezara
- Environmental SciencePhotosynthetica (Praha)
- 1 March 2014
Stem net photosynthesis (SNP) is proposed, which includes net CO2 fixation by stems with stomata in the epidermis and net corticularCO2 fixation in suberized stems, and stem recycling photoynthesis (SRP), which defines CO2 ling in su berized stems.
Responses to flooding of plant water relations and leaf gas exchange in tropical tolerant trees of a black-water wetland
- A. Herrera
- Environmental ScienceFrontiers in Plant Science
- 1 May 2013
The occurrence of morpho-anatomical and biochemical adaptations which improve oxygen supply would cause the acclimation, including increased water absorption by the roots, increased rubisco and chlorophyll contents and ultimately increased PN, so that trees would perform as if flooding did not signify a stress to their physiology.
Photosynthetic responses of the tropical spiny shrub Lycium nodosum (Solanaceae) to drought, soil salinity and saline spray.
- W. Tezara, D. MartÃnez, 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.
Occurrence of Inducible Crassulacean Acid Metabolism in Leaves of Talimum triangulare (Portulacaceae)
- A. Herrera, J. Delgado, I. Paraguatey
- Environmental Science
- 1 April 1991
CAM seems to be important for the tolerance of plants of this species to moderately prolonged periods of drought in conditions of full exposure as well as shade, and also for regaining high photosynthetic rates shortly after irrigation.
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 MarÃn, E. Rengifo, D. MartÃnez, 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…
Induction by drought of crassulacean acid metabolism in the terrestrial bromeliad, Puya floccosa
- A. Herrera, C. MartÃn, W. Tezara, C. Ballestrini, E. Medina
- Environmental SciencePhotosynthetica (Praha)
- 13 October 2010
It is concluded that P. floccosa is capable of a weak CAM activity, with a large variability among populations and drought experiments probably due to local and temporal differences in microclimatic variables and drought stress; elevation bears no influence on values of δ13C in this species.
Effects of Drought on CAM and Water Relations in Plants of Peperomia carnevalii
- A. Herrera, M. Fernández, M. A. Taisma
- Biology
- 1 September 2000
Comparison of water loss from thin leaves of watered and droughted plants suggested that water moved from the thick to the thin leaves, and this process was related to the occurrence of a gradient of water potential between the thick and the thin Leaves.
...
...