Environmental Influences on Open Stomates of a Crassulacean Acid Metabolism Plant, Agave deserti | Zendy

Park S. Nobel | Zendy; Terry L. Hartsock | Zendy

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Environmental Influences on Open Stomates of a Crassulacean Acid Metabolism Plant, Agave deserti

Author(s) -

Park S. Nobel,

Terry L. Hartsock

Publication year - 1979

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.63.1.63

Subject(s) - crassulacean acid metabolism , stomatal conductance , photosynthesis , botany , biology , horticulture , chemistry

The major short term stomatal response of Agave deserti was to temperature; increases in leaf temperature led to decreases in water vapor conductance for stomatal opening during the daytime (C(3) mode) as well as at night (Crassulacean acid metabolism or CAM mode). Hourly changes in the water vapor concentration drop from leaf to air had no significant stomatal effect in either mode. Stomatal responses to external CO(2) levels up to 800 microliters per liter were not significant after 15 minutes and only moderate after a few hours, suggesting that CO(2) effects on open stomates of this succulent were indirect in both CAM and C(3) modes.

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