PMID: 16662614Oct 1, 1982

Water Relations of Cotton Plants under Nitrogen Deficiency: V. Environmental Control of Abscisic Acid Accumulation and Stomatal Sensitivity to Abscisic Acid

Plant Physiology
J W RadinG Guinn


Suboptimal N nutrition increased the water potential for stomatal closure in water stressed cotton (Gossypium hirsutum L.) leaves. This increased sensitivity to water stress had two components, increased accumulation of abscisic acid (ABA) and increased apparent stomatal sensitivity to ABA. Low N increased the threshold water potentials for stomatal closure and ABA accumulation by about 4 bars and 2 bars, respectively. Low N also greatly increased stomatal response to low concentrations of exogenous ABA applied to excised leaves through the transpiration stream. In low N leaves, kinetin decreased stomatal response to ABA to the level observed with high N leaves. Kinetin by itself had little effect on stomata, nor did it alter stomatal response to ABA in high N leaves. The results suggest a cytokinin-ABA balance which is altered by suboptimal N nutrition to favor stomatal closure during stress.Ambient temperature and N nutrition interacted to alter stomatal response to water stress. Stress-induced ABA accumulation and apparent stomatal sensitivity to ABA were independently affected. The effects of each treatment, and their interaction, could be explained as the net result of changes in both accumulation and apparent sensitivity....Continue Reading


Mar 22, 2000·Plant Science : an International Journal of Experimental Plant Biology·A R LodeiroG Favelukes
Dec 6, 2011·Omics : a Journal of Integrative Biology·Francisco Pérez-AlfoceaI C Dodd
May 16, 2009·Journal of Experimental Botany·S. Wilkinson, W Hartung
Jan 5, 2011·Journal of Experimental Botany·Takatoshi KibaHitoshi Sakakibara
May 30, 2012·Journal of Experimental Botany·S. WilkinsonW. J. Davies
Jan 27, 2016·Journal of Proteomics·Christiana StaudingerStefanie Wienkoop
Mar 26, 2002·Journal of Experimental Botany·F Gastal, G Lemaire
Feb 14, 2002·Plant, Cell & Environment·S. Wilkinson, W. J. Davies
Apr 8, 2020·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Roberta BulgariAntonio Ferrante


Jul 1, 1964·Proceedings of the National Academy of Sciences of the United States of America·P F ScholanderE D Bradstreet

Related Concepts

Stomatal Closure
Surgical Stoma
Abscisic Acid
Gossypium hirsutum
Water Stress

Trending Feeds


Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Sexual Dimorphism in Neurodegeneration

There exist sex differences in neurodevelopmental and neurodegenerative disorders. For instance, multiple sclerosis is more common in women, whereas Parkinson’s disease is more common in men. Here is the latest research on sexual dimorphism in neurodegeneration

HLA Genetic Variation

HLA genetic variation has been found to confer risk for a wide variety of diseases. Identifying these associations and understanding their molecular mechanisms is ongoing and holds promise for the development of therapeutics. Find the latest research on HLA genetic variation here.

Super-resolution Microscopy

Super-resolution microscopy is the term commonly given to fluorescence microscopy techniques with resolutions that are not limited by the diffraction of light. Here are the latest discoveries pertaining to super-resolution microscopy.

Genetic Screens in iPSC-derived Brain Cells

Genetic screening is a critical tool that can be employed to define and understand gene function and interaction. This feed focuses on genetic screens conducted using induced pluripotent stem cell (iPSC)-derived brain cells.

Brain Lower Grade Glioma

Low grade gliomas in the brain form from oligodendrocytes and astrocytes and are the slowest-growing glioma in adults. Discover the latest research on these brain tumors here.

CD4/CD8 Signaling

Cluster of differentiation 4 and 8 (CD8 and CD8) are glycoproteins founds on the surface of immune cells. Here is the latest research on their role in cell signaling pathways.

Alignment-free Sequence Analysis Tools

Alignment-free sequence analyses have been applied to problems ranging from whole-genome phylogeny to the classification of protein families, identification of horizontally transferred genes, and detection of recombined sequences. Here is the latest research.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.