Influence of sub-threshold concentrations of peroxyacetyl nitrate (PAN) on bean subjected to post-exposure water stress

Journal Article · Tue Dec 31 23:00:00 EST 1974 · Proc. Amer. Phytopathol. Soc.; (United States)

OSTI ID:6427140

Starkey, T E; Davis, D D; Merrill, W; Pell, E J

Provider, a relatively susceptible bean variety and Stringless Black Valentine, a relatively tolerant variety were exposed to a sub-threshold concentration of 395 ..mu..g/m/sup 3/ (0.08 ppm) peroxyacetyl nitrate (PAN) for 0.5 hours. Both varieties were subjected to drought stress following exposure. Peroxyacetyl nitrate predisposed the susceptible variety Provider to post-exposure water stress, but did not predispose the tolerant Stringless Black Valentine to post-exposure water stress. Provider showed a significant increase in transpiration following PAN exposure as measured by a more negative water potential, decreased soil moisture and visible wilting. Although stomatal function may be involved, it is hypothesized that PAN effects either the abaxial cuticular membrane or the abaxial epidermal cells thus increasing the transpiration rate.

• Research Organization: Pennsylvania State Univ., University Park
• OSTI ID: 6427140
• Journal Information: Proc. Amer. Phytopathol. Soc.; (United States), Journal Name: Proc. Amer. Phytopathol. Soc.; (United States) Vol. 2; ISSN PAPSD
• Country of Publication: United States
• Language: English

Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BACTERIA
BIOLOGICAL EFFECTS
BIOLOGICAL FUNCTIONS
COMPARATIVE EVALUATIONS
DEHYDRATION
ESTERS
FUNCTIONS
LEGUMINOSAE
MICROORGANISMS
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
OPENINGS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PEROXYACETYL NITRATE
PHASEOLUS
PLANTS
RHIZOBIUM
STIMULATION
STOMATA
TRANSPIRATION