Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1979 Sep;64(3):499-501.
doi: 10.1104/pp.64.3.499.

Water Relations of Cotton Plants under Nitrogen Deficiency: II. Environmental Interactions on Stomata

J W Radin  1 , L L Parker
Affiliations

Water Relations of Cotton Plants under Nitrogen Deficiency: II. Environmental Interactions on Stomata

J W Radin et al. Plant Physiol. 1979 Sep.

Abstract

Nitrogen deficiency in cotton plants (Gossypium hirsutum L.) considerably increased the sensitivity of stomata to water stress. At air temperatures of 27, 35, and >/=40 C, threshold potentials for complete stomatal closure were -10, -15, and -26 bars in N-deficient plants and -20, -20, and -30 bars in high-N plants, respectively. This three-way interaction among N supply, water potential, and air temperature was similar to that exerted on leaf expansion. The effects of N supply on stomatal behavior could not be explained on the basis of either osmotic or structural considerations. Rather, effects of N deficiency on mesophyll and stomata were independent and divergent. Stomatal behavior may impart a stress avoidance type of drought resistance to N-deficient plants.

PubMed Disclaimer

References

    1. Plant Physiol. 1977 Dec;60(6):850-3 - PubMed
    1. Plant Physiol. 1978 Sep;62(3):406-12 - PubMed
    1. Plant Physiol. 1978 Oct;62(4):550-3 - PubMed
    1. Plant Physiol. 1979 Sep;64(3):495-8 - PubMed
    1. Plant Physiol. 1971 Nov;48(5):613-6 - PubMed

LinkOut - more resources