The effect of plant growth regulators on Verticillium wilt of potato

Corsini, D. L.; Thompson, C. F.; Pavek, J. J.

doi:10.1007/bf02853673

Cited by 3 publications

(3 citation statements)

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“…The increases in tuber yield and number observed following application of daminozide or CCC to plants grown from seed tubers (McIntosh and Bateman 1979;Corsini et al 1989;Sanderson et al 1990;Sharma et al 1998) were not observed in plants derived from TPS, even though the PGR were applied at similar concentrations. The inhibition of tuberisation in the spring crop of the second year caused by CCC was almost certainly due to toxicity, since pronounced chlorosis of the foliage occurred after CCC treatment.…”

Section: Discussionmentioning

confidence: 97%

“…The treatments were: (a) 100 ppm 6-benzylamino purine (BA) (Fluka), (b) 100 ppm indole-3-acetic acid (IAA) (Serva), (c) 150 ppm 2,4-dichlorophenoxy acetic acid (2,4-D) (Duchefa), (d) 100 ppm gibberellic acid (GA 3 ) (Serva), (e) 1250 ppm daminozide (Dazide 85SP, Fine Agrochemicals) or (f) 2000 ppm chlormequat chloride (CCC) (Ultraffix 60SL, Ciba). The concentrations of PGR were selected on the basis of preliminary experiments using a range of product concentrations (Alexopoulos 2006) and on data published from experiments with seed tubers (Menzel 1980;Corsini et al 1989;Sharma et al 1998). Each treatment was applied to four replicates of six plants in each experiment.…”

Section: Methodsmentioning

confidence: 99%

“…Auxins and cytokinins influence tuber size, whereas ethylene inhibits tuber induction in vivo or may cause the swelling of stolons without starch in vitro (Mingo-Castel et al 1976). Tuber yields were not affected by exogenous application of BA or IAA, but were reduced by GA 3 (Corsini et al 1989). According to Lovell and Booth (1967), exogenously applied gibberellin stops the growth of preformed tubers by promoting the development of new stolons.…”

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Effect of plant growth regulators on the tuberisation and physiological age of potato (Solanum tuberosum L.) tubers grown from true potato seed

Αλεξόπουλος¹,

Akoumianakis²,

Passam³

2006

Can. J. Plant Sci.

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The effects of plant growth regulators [6-benzyl amino purine (BA), indole-3-acetic acid (IAA), 2,4-dichlorophenoxyacetic acid (2,4-D), gibberellic acid (GA 3 ), chlormequat chloride (CCC), daminozide] and their time of application on tuberisation and physiological age of cv. Chacasina F 1 grown from true potato seed (TPS) were studied in four experiments conducted in spring or autumn in Greece. BA, IAA and 2,4-D did not affect plant development, tuberisation or the physiological age of the tubers produced. Daminozide and CCC reduced plant height when applied 30 but not 60 d after transplanting (DAT) in both spring and autumn. Neither substance affected tuberisation or the physiological age of the tubers formed. Application of GA 3 30 DAT significantly increased plant height and the number, but not the weight, of tubers formed per plant. Tubers from GA 3 -treated plants tended to be elongated with a low dry matter content. When GA 3 was applied at 60 DAT, plant height was increased, but tuber number, weight and dry matter content were not affected. Late application of GA 3 induced a high percentage of sprouted tubers prior to harvest and significantly increased the physiological age of the tubers, as reflected by an increased rate of respiration, sprouting and weight loss after harvest. Although early application of GA 3 also increased tuber sprouting prior to harvest, it had no effect on sprouting, respiration and weight loss after harvest. Application of GA 3 early in the vegetative cycle may be useful for the production of mini-tubers for propagation, whereas application at a later stage may aid in early planting by accelerating the breaking of tuber dormancy.

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Section: Discussionmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 98%

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Effect of plant growth regulators on the tuberisation and physiological age of potato (Solanum tuberosum L.) tubers grown from true potato seed

Αλεξόπουλος¹,

Akoumianakis²,

Passam³

2006

Can. J. Plant Sci.

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Modification of competence for in vitro response to Fusarium oxysporum in tomato cells. II. Effect of the integration of Agrobacterium tumefaciens genes for auxin and cytokinin synthesis

Storti

Bogani

Bettini

et al. 1994

Theoret. Appl. Genetics

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Stabilization of Cytokinin Levels Enhances Arabidopsis Resistance Against Verticillium longisporum

Reusche¹,

Klásková²,

Thole³

et al. 2013

MPMI

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Verticillium longisporum is a vascular pathogen that infects the Brassicaceae host plants Arabidopsis thaliana and Brassica napus. The soilborne fungus enters the plant via the roots and colonizes the xylem of roots, stems, and leaves. During late stages of infections, Verticillium spp. spread into senescing tissue and switch from biotrophic to a necrotrophic life style. Typical symptoms of V. longisporum-induced disease are stunted growth and leaf chlorosis. Expression analyses of the senescence marker genes SENESCENCE-ASSOCIATED GENE12, SENESCENCE-ASSOCIATED GENE13, and WRKY53 revealed that the observed chlorosis is a consequence of premature senescence triggered by Verticillium infection. Our analyses show that, concomitant with the development of chlorosis, levels of trans-zeatin decrease in infected plants. Potentially, induction of cytokinin oxidase/dehydrogenase expression by Verticillium infection contributes to the observed decreases in cytokinin levels. Stabilization of Arabidopsis cytokinin levels by both pharmacological and genetic approaches inhibits Verticillium proliferation and coincides with reduced disease symptom development. In summary, our results indicate that V. longisporum triggers premature plant senescence for efficient host plant colonization.

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The effect of plant growth regulators on Verticillium wilt of potato

Cited by 3 publications

References 9 publications

Effect of plant growth regulators on the tuberisation and physiological age of potato (Solanum tuberosum L.) tubers grown from true potato seed

Effect of plant growth regulators on the tuberisation and physiological age of potato (Solanum tuberosum L.) tubers grown from true potato seed

Modification of competence for in vitro response to Fusarium oxysporum in tomato cells. II. Effect of the integration of Agrobacterium tumefaciens genes for auxin and cytokinin synthesis

Stabilization of Cytokinin Levels Enhances Arabidopsis Resistance Against Verticillium longisporum

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