Seed and Pod Wall Development in<i>Pisum sativum</i>, L. in Relation to Extracted and Applied Hormones

Eeuwens, C. J.; Schwabe, W. W.

doi:10.1093/jxb/26.1.1

Cited by 174 publications

(80 citation statements)

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“…Cytokinins can induce parthenocarpy when applied to unpollinated pea ovaries (Eeuwens and Schwabe, 1975;García-Martínez and Carbonell, 1980;Sponsel, 1982), and the transport of these hormones from the roots is under the control of IAA from the shoot (Bangerth, 1994;Li et al, 1995). However, the observation that decapitation induces parthenocarpy in the absence of roots (the main purported source of cytokinins; Chen et al, 1985), as far as the mature leaves were present in the plant (Table I), does not support the idea of cytokinins being involved in stimulating fruit growth on decapitated plants.…”

Section: Martínez Andmentioning

confidence: 99%

Hormonal Control of Parthenocarpic Ovary Growth by the Apical Shoot in Pea1

Rodrigo

Garcı́a-Martı́nez

1998

Plant Physiology

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Section: Martínez Andmentioning

confidence: 99%

Hormonal Control of Parthenocarpic Ovary Growth by the Apical Shoot in Pea1

Rodrigo

Garcı́a-Martı́nez

1998

Plant Physiology

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“…Plant hormones have often been implicated in this process, largely because different hormones, alone or in combination, can substitute for seeds in promoting fruit growth (e.g. Eeuwens and Schwabe 1975;Vivian-Smith and Koltunow 1999). Seeds are also a rich source of plant hormones, including auxin and gibberellins (GAs).…”

Section: Introductionmentioning

confidence: 99%

Localised and non-localised promotion of fruit development by seeds in Arabidopsis

Cox¹,

Swain²

2006

Functional Plant Biol.

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Abstract. In Arabidopsis, as in the majority of flowering plants, developing seeds promote fruit growth. One method to investigate this interaction is to use plants with reduced seed set and determine the effect on fruit growth. Plants homozygous for a transgene designed to ectopically express a gene encoding a gibberellin-deactivating enzyme exhibit reduced pollen tube elongation, suggesting that the plant hormone gibberellin is required for this process. Reduced pollen tube growth causes reduced seed set and decreased silique (fruit) size, and this genotype is used to explore the relationship between seed set and fruit elongation. A detailed analysis of seed set in the transgenic line reveals that reduced pollen tube growth decreases the probability of each ovule being fertilised. This effect becomes progressively more severe as the distance between the stigma and the ovule increases, revealing the complex biology underlying seed fertilisation. In terms of seed-promoted fruit growth, major localised and minor non-localised components that contribute to final silique length can be identified. This result demonstrates that despite the relatively small size of the fruit and associated structures, Arabidopsis can be used as a model to investigate fundamental questions in fruit physiology.

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“…6) (Fig. 6) was also noticed in very young pea pod (6). The cause of this early high level of ABA was not investigated.…”

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confidence: 95%

“…In many species, changes of hormone content throughout development of the reproductive parts have been determined. From the accumulated data, there appears to be a general pattern of high growth promoter content in early development followed by high inhibitor, mainly ABA, content later in development (1,6,14). This late appearance of ABA has been thought to have important implications in fruit maturation (2), abscission (3), or seed dormancy (5).…”

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confidence: 99%

Abscisic Acid Accumulation in Developing Seeds of Phaseolus vulgaris L

Hsu¹

1979

Plant Physiol.

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Free and bound abscisic acid (ABA) in the pod, seed coat, and embryo were determined separately throughout seed develpment of Phaseolus vulgans L. cv. 'Taylor's Horticultural.' An internal standard method of gas-lquid chromatography was used for ABA quantification. In the embryo, two peaks of free ABA occurred at days 22 (1.18 micrograms per gram or 5.5 micromolar) and 28 (1.74 micrograms per gram or 12 micromolar); and a single peak of bound ABA at day 30. In the seed coat, there was one peak of free ABA at day 22 and only small amounts of bound ABA. Very small amounts of ABA were detected in the pod at any stage of development. In cv. PI 226895, in which seed development is more rapid than in 'Taylor's Horticultural,' the embryo ABA peaks occur on days 20 and 26. The timing of the ABA peak in the embryo, and the concentration attained, are consistent with previous reports on the natural pattern of RNA synthesis and with ABA inhibition of RNA synthesis in developing bean fruit.Developing fruits and seeds have long been known as a rich source of plant hormones (14). In many species, changes of hormone content throughout development of the reproductive parts have been determined. From the accumulated data, there appears to be a general pattern of high growth promoter content in early development followed by high inhibitor, mainly ABA, content later in development (1,6,14). This late appearance of ABA has been thought to have important implications in fruit maturation (2), abscission (3), or seed dormancy (5).This report is an analysis of the change in ABA content during reproductive development of Phaseolus vulgaris, with a discussion of its correlation with seed weight changes and other related processes. P. vulgaris was chosen because of the large body of information on reproductive development (9, 24), macromolecular metabolism (21, 23), and genetics (28). Clarkson Chemical Co., Williamsport, Pa.) was suspended in chloroform and packed in a 5-ml glass disposable pipette which was plugged with a piece of glass wool at the outlet. ABA extracts were dissolved in chloroform and loaded into the column. The column was eluted first with 10 ml of chloroform to wash off some impurities. It was next eluted with 10 ml of chloroform-methanol (90:10). This fraction contained ABA, and was saved for derivatization. A small scale method was used to generate diazomethane which derivatized ABA into its methyl ester (19).A Hewlett-Packard model 1610A gas chromatograph equipped with a flame ionization detector and an automatic peak area integrator was used throughout ABA quantification. An XE-60 column was used for all samples. OV-I and OV-17 columns were used to verify the authenticity of any suspect ABA peaks. A suspect peak was confirmed as c-t ABA if it co-chromatographed with authentic c-t ABA in all three columns. Operating conditions were: column temperature, 200 C; injector and detector temperature, 250 C; carrier gas (N2) flow rate, 40 ml/min.Tetraphenyl ethylene was used as an internal standard to facilitate th...

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Seed and Pod Wall Development inPisum sativum, L. in Relation to Extracted and Applied Hormones

Cited by 174 publications

References 0 publications

Hormonal Control of Parthenocarpic Ovary Growth by the Apical Shoot in Pea1

Hormonal Control of Parthenocarpic Ovary Growth by the Apical Shoot in Pea1

Localised and non-localised promotion of fruit development by seeds in Arabidopsis

Abscisic Acid Accumulation in Developing Seeds of Phaseolus vulgaris L

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