The Role of Abscisic Acid in Chilling Resistance

Ruichi, Pan

doi:10.1007/978-3-642-74545-4_46

Cited by 10 publications

(7 citation statements)

References 24 publications

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“…Application of PP333, an inhibitor of GA biosynthesis, increased ABA content (Figs 2 and 3), delayed growth rate (Tab, 1) and accelerated fruit abscission (Talon et al 1992) in both varieties. In other plant tissues, such as peanut leaves (Pan 1990), Actinidia stems (Tafazoii and Beyl 1993), and water-stressed leaves of bean and Xanthium (Asare-Boamah et al 1986, Zeevaart et al 1990) an inerease in the ABA content by application of plant retardants has also tieen reported. This effect may be associated with the inhibition of the monooxygenase eonverting ABA to phaseie acid, thus leading to an accumulation of free ABA (Zeevaart et al 1990).…”

Section: Discussionmentioning

confidence: 97%

“…Moreover, these growth retardants appear to exhibit different effects in influencing the endogenous ABA content (Grossmann 1990). Inereased ABA levels ui cell suspension cultures of oilseed rape (Hauser et al 1992) and in normal and water-stressed leaves of different species have been reported (Asare-Boamah et al 1986, Pan 1990, Zeevaart et al 1990. Tafazoli and Beyl 1993.…”

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confidence: 98%

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Abscisic acid increases in non-growing and paclobutrazol-treated fruits of seedless mandarins

Zacarias¹,

Talón²,

Ben-Cheikh³

et al. 1995

Physiol Plant

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Zacarias, L., Talon, M., Ben-Cheikh, W., Lafuente, M. T. and Primo-Millo, E. 1995. Abscisic acid increases in non-growing and paclobutrazol-lreated fruits of seedless mandarins. -Physiol. Plant. 95: 613-619.Clementine [Citrus reticuiala fHoit.] Ex. Tanaka cv. Oroval) is a self-incompatible mandarin with a slow rale of fruit growth and high percentage of fruit abscission. Seedless Satsuma (Citrus unshiu [Mak] Marc. cv. Clausellina) shows natural parthenocarpy and higher fruit set. Application of 25 ng fruit ' of paclobutiazol (PP333), an inhibitor of gibberelhn biosynthesis, reduced the rate of growth and accelerated fruit abscission in both varieties. In contrast, gibberellin A, (GAj) stimulated fmit growth only in the selfincompatible mandarin. Clementine fruits, in the absence of pollination, showed an approximately 2-fold transient increase in the free abscisic acid (ABA) content shortly af-teT petal fall. In Satsuma, a very small accumulation of ABA was detected. Paclobutrazol treatment induced a 3-fold increase in ABA in Satsuma fruits but did not substantially affect the pattem of ABA accumulation in Clementine. In this variet>', GA, suppressed the ABA increase observed in untreated fruits. These effects were observed 24 h after treatment. However, in Satsuma fruits, the effect of GA, on the ABA content was negligible. In addition, a comparative analysis of growing and non-growing fruits of Clementine showed that ABA, on a per unit weight basis, was always higher in the nongrowing fruits. Treatment with 85 pM fluridoae. an inhibitor of carotenoid biosynthesis and thus indirectly of ABA, delayed fruit abscission in Clementine, but also decreased fmit growth. Collectively, these observations indicate a relationship between high ABA content and a reduced rate of fruit growth and an acceleration of fruit abscission. Kev words -Abscisic acid. Citrus reticulata. Citrus unshiu. fruit growth and abscission, gibberellins. mandarin, paclobutrazol. L. Zaearias (eorresponding author) and M. T. Lafuente. Ptiysiol. Ptant. 95. 1995 s\ -J-\

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Section: Discussionmentioning

confidence: 97%

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confidence: 98%

Abscisic acid increases in non-growing and paclobutrazol-treated fruits of seedless mandarins

Zacarias¹,

Talón²,

Ben-Cheikh³

et al. 1995

Physiol Plant

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“…A recent consensus of opinion, however, is that induction of new ABA synthesis at low temperature is geared toward other forms of plant protection (Pan, 1990).…”

Section: Discussionmentioning

confidence: 99%

Rapid Low Temperature-Induced Stomatal Closure Occurs in Cold-Tolerant Commelina communis Leaves But Not in Cold-Sensitive Tobacco Leaves, via a Mechanism That Involves Apoplastic Calcium But Not Abscisic Acid

2001

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Commelina communis stomata closed within 1 h of transferring intact plants from 27°C to 7°C, whereas tobacco (Nicotiana rustica) stomata did not until the leaves wilted. Abscisic acid (ABA) did not mediate cold-induced C. communis stomatal closure: At low temperatures, bulk leaf ABA did not increase; ABA did not preferentially accumulate in the epidermis; its flux into detached leaves was lower; its release from isolated epidermis was not greater; and stomata in epidermal strips were less sensitive to exogenous ABA. Stomata of both species in epidermal strips on large volumes of cold KCl failed to close unless calcium was supplied. Therefore, the following cannot be triggers for cold-induced stomatal closure in C. communis: direct effects of temperature on guard or epidermal cells, long-distance signals, and effects of temperature on photosynthesis. Low temperature increased stomatal sensitivity to external CaCl 2 by 50% in C. communis but only by 20% in tobacco. C. communis stomata were 300-to 1,000-fold more sensitive to calcium at low temperature than tobacco stomata, but tobacco epidermis only released 13.6-fold more calcium into bathing solutions than C. communis. Stomata in C. communis epidermis incubated on ever-decreasing volumes of cold calcium-free KCl closed on the lowest volume (0.2 cm 3 ) because the epidermal apoplast contained enough calcium to mediate closure if this was not over diluted. We propose that the basis of cold-induced stomatal closure exhibited by intact C. communis leaves is increased apoplastic calcium uptake by guard cells. Such responses do not occur in chill-sensitive tobacco leaves.

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“…The development of chilling resistance of 'hardened' plants is associated with the accumulation of ABA during the hardening treatment (7,19,24). Nevertheless, no relationship between ABA content following temperature conditioning and chilling tolerance was found in cucumber cotyledons (11).…”

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“…Applications of ABA to sensitive plants before cold treatment reduced chilling injury (9,14,17,19), but ABA supplied at the onset of chilling was ineffective (23). Moreover, ABA accumulation observed in chilled plants was not associated with amelioration of the water status (3,7,26,27,29).…”

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Involvement of Abscisic Acid in Regulating Water Status in Phaseolus vulgaris L. during Chilling

Pardossi¹,

Vernieri²,

Tognoni³

1992

Plant Physiol.

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During the first hours of chilling, bean (Phaseolus vulgaris L., cv Mondragone) seedlings suffer severe water stress and wilt without any significant increase in leaf abscisic acid (ABA) content (P. Aust J Plant Physiol 18: 25-35). Plants regain turgor after 30 to 40 h. We hypothesized that inability to rapidly synthesize ABA at low temperatures contributes to chilling-induced water stress and that turgor recovery after 30 to 40 h is mediated by changes in endogenous ABA content. Entire bean seedlings were subjected to long-term (up to 6 d) chilling (3°C, 0.2-0.4 kPa vapor pressure deficit, 100 Mmol.m-2.s-1 photosynthetic photon flux density, continuous fluorescent light). During the first 24 h, stomata remained open, and plants rapidly wilted as leaf transpiration exceeded root water absorption. During this phase, ABA did not accumulate in leaves or in roots. After 24 h, ABA content increased in both tissues, leaf diffusion resistance increased, and plants rehydrated and regained turgor. No osmotic adjustment was associated with turgor recovery. Following turgor recovery, stomata remained closed, and ABA levels in both roots and leaves were elevated compared with controls. The application of ABA (0.1 mM) to the root system of the plants throughout exposure to 3°C prevented the chilling-induced water stress. Excised leaves fed 0.1 mm ABA via the transpiration stream had greater leaf diffusion resistance at 20 and 3°C compared with non-ABA fed controls, but the amount of ABA needed to elicit a given degree of stomatal closure was higher at 3°C compared with 20°C. These findings suggest that endogenous ABA may play a role in ameliorating plant water status during chilling.

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The Role of Abscisic Acid in Chilling Resistance

Cited by 10 publications

References 24 publications

Abscisic acid increases in non-growing and paclobutrazol-treated fruits of seedless mandarins

Abscisic acid increases in non-growing and paclobutrazol-treated fruits of seedless mandarins

Rapid Low Temperature-Induced Stomatal Closure Occurs in Cold-Tolerant Commelina communis Leaves But Not in Cold-Sensitive Tobacco Leaves, via a Mechanism That Involves Apoplastic Calcium But Not Abscisic Acid

Involvement of Abscisic Acid in Regulating Water Status in Phaseolus vulgaris L. during Chilling

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