Genotypic variation in coleus in the ability to accumulate abscisic acid in response to water deficit

Terry, Paul H.; Krizek, Donald T.; Mirecki, Roman M.

doi:10.1111/j.1399-3054.1988.tb09149.x

Cited by 6 publications

(6 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Droughthardy varieties of maize (Larque-Saavedra and Wain 1976) and cotton (Ibragimov et al 1978) produced more ABA when stressed by drought. By contrast, droughtresistant varieties of spring wheat (Quarrie 1981) and coleus (Terry et al 1988) produced less ABA. The present study attempts particularly to explain growth rate differences observed under drought in conifer species.…”

Section: Discussionmentioning

confidence: 94%

See 1 more Smart Citation

Drought tolerance, abscisic acid and electrolyte leakage in fast- and slow-growing black spruce (Picea mariana) progenies

Tan¹,

Blake²

1993

Physiol Plant

View full text Add to dashboard Cite

Tan, W. and Blake, T. J. 1993. Drought tolerance, abscisic acid and electrolyte leakage in fast-and slow-growing black spruce (Picea mariana) progenies. -Physiol. Plant. 89: 817-823.To investigate the role that drought tolerance plays in growth, abscisic acid (ABA) accumulation and electrolyte leakage during water stress were compared in fast-and slow-growing black spruce (Picea mariana [Mill.] B. S. P.) progenies. Changes in the ABA content of the needles were quantified using an indirect enzyme-linked immunosorbent assay validated by gas chromatography electron capture detection. Needle electrolyte leakage was estimated using a conductivity bridge. Seedlings were stressed using (I) osmotic stress, induced by a stepwise increase in concentrations of polyethylene glycol 3 350 (PEG) for ABA study and (2) air drying for electrolyte leakage study. Progenies did not differ in ABA levels under unstressed conditions, but progeny differences were observed under osmotic stress. Needle ABA content increased up to 500% under osmotic stress. Slow-growing black spruce progenies (25 and 46) accumulated more ABA under moderate (18% PEG), but not severe (25% PEG), osmotic stress. The slow-growing progenies also leaked more electrolytes under moderate to severe water stress and lost 50% electrolytes at a higher xylem tension, suggesting they suffered more injury and were less dehydration tolerant. Our previously-published results showed that slow-growing progenies lost their photosynthesis and stomatal conductance more quickly during osmotic stress and recovered more slowly after rehydration. Therefore, tolerance of dehydration leading to a maintenance of physiological integrity during drought stress could explain the fast growth rates of more vigorous black spruce progenies.

show abstract

Section: Discussionmentioning

confidence: 94%

“…Plants vary in their ability to accumulate ABA during water stress (Roberts andDumbroff 1986, Terry et al 1988). Genotypes of pearl millet (Henson et al 1981) and coleus (Terry et al 1988) which accumulated higher amounts of ABA closed their stomata more quickly and fully under water stress.…”

Section: Introductionmentioning

confidence: 99%

Drought tolerance, abscisic acid and electrolyte leakage in fast- and slow-growing black spruce (Picea mariana) progenies

Tan¹,

Blake²

1993

Physiol Plant

View full text Add to dashboard Cite

show abstract

“…It has been suggested that ABA may function as a trigger in cold acclimation: the signal caused by low temperature would result in an increase in endogenous ABA concentration, which in turn would initiate the acclimation process, probably at the level of gene expression [8]. Similar to cold acclimation, drought stress results in increased ABA levels in plant leaves [38] and proteins and mRNAs induced by drought stress are also induced by exogenously added ABA [4,6,33]. It has been suggested that the induction of new proteins by drought is mediated by the increased levels of endogenous ABA [4,6].…”

Section: Introductionmentioning

confidence: 97%

Separate signal pathways regulate the expression of a low-temperature-induced gene in Arabidopsis thaliana (L.) Heynh.

1991

View full text Add to dashboard Cite

A cDNA clone corresponding to a novel low-temperature-induced Arabidopsis thaliana gene, named lti140, was employed for studies of the environmental signals and the signal pathways involved in cold-induced gene expression. The single-copy lti140 gene encodes a 140 kDa cold acclimation-related polypeptide. The lti140 mRNA accumulates rapidly in both leaves and roots when plants are subject to low temperature or water stress or are treated with the plant hormone abscisic acid (ABA), but not by heat-shock treatment. The low-temperature induction of lti140 is not mediated by ABA, as shown by normal induction of the lti140 mRNA in both ABA-deficient and ABA-insensitive mutants and after treatment with the ABA biosynthesis inhibitor fluridone. The effects of low temperature and exogenously added ABA are not cumulative suggesting that these two pathways converge. The induction by ABA is abolished in the ABA-insensitive mutant abi-1 indicating that the abi-1 mutation defines a component in the ABA response pathway. Accumulation of the lti140 mRNA in plants exposed to water stress was somewhat reduced by treatment with fluridone and in the ABA-insensitive mutant abi-1 suggesting that the water stress induction of ltil40 could be partly mediated by ABA. It is concluded that three separate but converging signal pathways regulate the expression of the ltil40 gene.

show abstract

“…Plant material consisted of two cultivars ofColeus found previously to differ in sensitivity to a wide range of stresses, with 'Buckley Supreme' ('BS') being highly sensitive and 'Marty' ('M') being relatively insensitive (Semeniuk and Heggestad, 1981;Semeniuk and Stewart, 1979;Terry et al, 1988). The studies were conducted at Beltsville, MD in a greenhouse equipped with incandescent lights to extend the daylength to 16 h. Maximum daytime photosynthetically active radiation was ca 1,100-1,500 umol-nvV measured at plant canopy height at mid-day.…”

Section: Plant Materials and Cultural Proceduresmentioning

confidence: 99%

“…However, relatively little is known about the adaptability of ornamental species to acid soils high in exchangeable Al (Foy and Wheeler, 1979;Knoblauch, 1981). Previous studies conducted at Beltsville, MD have demonstrated significant cultivar differences in the environmental stress tolerance ofColeus (Abbott et al, 1987;Krizek et al, 1985;Moline and Semeniuk, 1983;Semeniuk and Heggestad, 1981;Semeniuk and Stewart, 1979;Terry et al, 1988). The cultivar 'Buckley Supreme' ('BS') is extremely sensitive to water stress, UV-B radiation, ozone (O 3 ), and sulfur dioxide (SO 2 ), while the cultivar 'Marty' ('M') is tolerant of these stresses.…”

Section: Introductionmentioning

confidence: 97%

Influence of aluminum stress on shoot and root growth of contrasting genotypes of coleus

Krizek

Foy

Mirecki

1997

Journal of Plant Nutrition

Self Cite

View full text Add to dashboard Cite

Two cultivars of Coleus blumei Benth., found previously to differ in stress tolerance to UV-B radiation, water stress, and air pollutants-stress-tolerant 'Marty' ('M') and stress-sensitive 'Buckley Supreme' ('BS')-were grown in a greenhouse at Beltsville, MD in nutrient solutions containing 0 to 24 mg aluminum (Al) L -1 (Experiments I and II) and on an acid Al-toxic Tatum subsoil (clayey, mixed, thermic, Typic Hapludult) (Experiment III) at six lime levels, from 0 to 6,000 μg calcium carbonate (CaCO 3 ) g -1 (pH 4.47 to 7.30 and percent Al saturations from 60 to 0) to characterize their possible genotypic differences in response to Al toxicity. Significant inhibitory effects of Al stress on shoot growth were generally observed in solution culture at 8 mg Al L -1 or higher, while inhibition of root growth in solution culture was generally observed at 16 mg L -1 or higher. At 16 and 24 mg Al L -1 (Experiment II), the relative dry weights of shoots and roots were reduced to about 60% of the control values in both cultivars. Leaf tissue concentrations of phosphorus (P) and Al were increased and calcium (Ca) was decreased at 24 mg Al L -1 . Both cultivars of Coleus were extremely tolerant to Al stress, both in nutrient solution and in an acid Al-toxic Tatum subsoil. Thus, Coleus appears to be a 1045

show abstract

Genotypic variation in coleus in the ability to accumulate abscisic acid in response to water deficit

Cited by 6 publications

References 26 publications

Drought tolerance, abscisic acid and electrolyte leakage in fast- and slow-growing black spruce (Picea mariana) progenies

Drought tolerance, abscisic acid and electrolyte leakage in fast- and slow-growing black spruce (Picea mariana) progenies

Separate signal pathways regulate the expression of a low-temperature-induced gene in Arabidopsis thaliana (L.) Heynh.

Influence of aluminum stress on shoot and root growth of contrasting genotypes of coleus

Contact Info

Product

Resources

About