Endogenous levels of IAA in relation to parthenocarpy in cucumber (Cucumis sativus L.)

Kim, Il Seop; Okubo, Hiroshi; Fujieda, Kunimitsu

doi:10.1016/0304-4238(92)90002-t

Cited by 71 publications

(57 citation statements)

References 13 publications

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“…Evidently, TIBA and BA decreased the rate of abortion and fruit growth stagnation at the middle (14 to 20) and upper nodes (21 to 25) when fruit load was high. This is consistent with studies conducted by Kim et al (1992) and Shishido et al (1990), who reported that the application of TIBA and BA to a single fruit per plant enhanced fruit growth without pollination in non-parthenocarpic cultivars, leading to increased yield. However, the application of IAA and GA 3 to a parthenocarpic cultivar led to the inhibition of fruit growth at the middle and upper nodes in our study.…”

Section: Discussionsupporting

confidence: 92%

“…It is well known that PGR application to a single fruit per plant improves fruit growth and prevents fruit abortion (Hayashi et al, 1970;Kim et al, 1992;Ogawa et al, 1989;Shimizu, 1967;Shishido et al, 1990). Kim et al (1992) reported that the application of either N-1-napthylphthylamic acid (naptalam, an auxin transport inhibitor) or TIBA to the peduncles of nonparthenocarpic single cucumber fruits doubled their IAA content compared with that of unpollinated ovaries, and decreased fruit abortion.…”

Section: Discussionmentioning

confidence: 99%

“…Kim et al (1992) reported that the application of either N-1-napthylphthylamic acid (naptalam, an auxin transport inhibitor) or TIBA to the peduncles of nonparthenocarpic single cucumber fruits doubled their IAA content compared with that of unpollinated ovaries, and decreased fruit abortion. This was also the case with pollinated ovaries.…”

Section: Discussionmentioning

confidence: 99%

“…Fruit were weighed, frozen in liquid nitrogen, and then the concentrations of trans-zeatin (Z), trans-zeatin riboside (ZR), isopentenyladenine (iP), isopentenyladenosine (iPR), and IAA were determined. These hormones are active forms of auxin and cytokinin that function as primary inducers of fruit growth in cucumber plants (Kim et al, 1992;Ogawa et al, 1989Ogawa et al, , 1990. The extraction and purification of hormones were performed as described by Yu et al (2001) and Ito et al (1999), with some modifications (Boonkorkaew et al, 2008).…”

Section: Endogenous Hormone Analysismentioning

confidence: 99%

“…In particular, indole-3-acetic acid (IAA) (Hayashi et al, 1970), 2,3,5-triiodobenzoic acid (TIBA) (Hamamoto et al, 1998;Kim et al, 1992), benzyl adenine (BA) (Shishido et al, 1990), N-(2-chloro-4-pyridyl)-N′-phenylurea (CPPU) (Li et al, 2014), and gibberellic acid (GA 3 ) (Ogawa et al, 1989;Shimizu, 1967) have been reported to induce parthenocarpic fruit growth in cucumbers and tomatoes. However, these studies applied PGRs to only one fruit per plant.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Exogenous Plant Growth Regulators on Yield, Fruit Growth, and Concentration of Endogenous Hormones in Gynoecious Parthenocarpic Cucumber (<i>Cucumis sativus</i> L.)

Hikosaka

Sugiyama

2015

The Hortic J

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It has been reported that parthenocarpic cucumbers with many female flowers and heavy fruit load often show fruit abortion and reduced fruit yield. To achieve the stable fruit production, it is necessary to elucidate the mechanism involved in fruit abortion in cucumbers via fruit load and endogenous plant hormones. In Exp. 1, the effects of exogenous plant growth regulators (PGRs) on yield and fruit growth were examined in a gynoecious, parthenocarpic cucumber (Cucumis sativus L.). Four types of PGR [indole-3-acetic acid (IAA), 2,3,5-triiodobenzoic acid (TIBA), benzyl adenine (BA), and gibberellic acid (GA 3 )], which have been shown to enhance fruit growth in non-parthenocarpic cucumbers, were applied using lanolin paste to the peduncles at each node (6-25) of cucumber plants at anthesis. TIBA and BA applications significantly decreased the rate of fruit abortion, thereby increasing yield. IAA and GA 3 treatments increased the rate of fruit abortion at the middle and upper nodes, thereby reducing fruit yield. In Exp. 2, to clarify whether PGRs affected the concentrations of endogenous plant hormones, and whether IAA of high concentration increased fruit abortion under low-fruit-load conditions, we applied these PGRs (two concentrations of IAA, BA, and TIBA) to cucumber plants bearing only one fruit at node 11 or 12. No fruit abortion occurred following any PGR or control treatment, although both IAA and BA treatments inhibited fruit growth. BA application increased the production of cytokinins (Z, ZR, iP, and iPR) to a level similar to that after TIBA application one day after anthesis. However, compared with the response to TIBA treatment, after BA treatment, the peak in endogenous cytokinin production occurred at an earlier stage of fruit development. Additionally, both IAA and TIBA treatments increased endogenous IAA and cytokinin concentrations in fruit. These results suggest that exogenous PGRs affect the overall concentration of PGRs, as well as that of other endogenous plant hormones. However, PGRs may not be associated with fruit abortion when the fruit load is low. In conclusion, fruit load may have a greater influence on fruit abortion than that of PGRs.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Endogenous Hormone Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Exogenous Plant Growth Regulators on Yield, Fruit Growth, and Concentration of Endogenous Hormones in Gynoecious Parthenocarpic Cucumber (<i>Cucumis sativus</i> L.)

Hikosaka

Sugiyama

2015

The Hortic J

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Fertilization and Fruit Initiation

Fuentes

Vivian‐Smith

2018

Annual Plant Reviews Online

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Angiosperms have evolved the unique processes of double fertilization and fruit development as key steps of their survival and dispersal strategies. In this chapter, we will examine fertilization and fruit initiation as central restriction points to fruit and seed development. Pollination and fertilization appear essential for fruit initiation, since angiosperm flowers universally enter terminal senescence and abscission phases if pollination is prevented. We review key developmental processes, pathways and genes that were recruited to control and restrict the reproductive growth of the carpel and ovule until fertilization is achieved. Ever since the discovery that exogenous application of phytohormones results in the development of seedless fruit without fertilization (termed parthenocarpy), most research has concentrated on the role of endogenous phytohormones as triggers for fruit initiation after fertilization. We will highlight how uncoupling of fruit initiation from fertilization through mutational studies can further contribute to the understanding of these complex processes. Initial analysis shows that strict local control of auxin signalling, through a transcription factor network, forms one of the decisive and primary events that leads to the hierarchical control over gibberellin metabolism and perception. Testing and challenging these assumptions will provide further knowledge indispensable for controlling fruit set and yield in agriculture.

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Forbidden Fruit: Dominance Relationships and the Control of Shoot Architecture

Walker

Bennett

2018

Annual Plant Reviews Online

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Plants continually integrate environmental information to make decisions about their development. Correlative controls, in which one part of the plant regulates the growth of another, form an important class of regulatory mechanism, but their study has been neglected and their molecular basis remains unclear. In this review, we examine the role of negative correlative controls or 'dominance' phenomena in the regulation of shoot architecture. Apical dominance, in which actively growing shoot branches inhibit the growth of other branches, is perhaps the most famous example of this. We discuss the recent progress made in understanding the mechanistic basis for apical dominance, and three plausible models for shoot branching control. We then use the apical dominance paradigm to explore other dominance phenomena, including seed-seed inhibition (carpic dominance), seed-tomeristem inhibition, and the control of maternal senescence by seeds. We propose that apical and carpic dominance may share a common mechanistic basis rooted in auxin transport canalization. Conversely, we conclude that seed-to-meristem inhibition and seed-driven senescence may not be 'true' correlative controls, but rather more complex phenomena in which seed-set plays a permissive rather than instructive role. Overall, we attempt to develop a coherent framework for understanding the developmental and regulatory mechanisms that control shoot architecture, and provide new insights into the end of flowering, fruiting and growth.

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Endogenous levels of IAA in relation to parthenocarpy in cucumber (Cucumis sativus L.)

Cited by 71 publications

References 13 publications

Effects of Exogenous Plant Growth Regulators on Yield, Fruit Growth, and Concentration of Endogenous Hormones in Gynoecious Parthenocarpic Cucumber (<i>Cucumis sativus</i> L.)

Effects of Exogenous Plant Growth Regulators on Yield, Fruit Growth, and Concentration of Endogenous Hormones in Gynoecious Parthenocarpic Cucumber (<i>Cucumis sativus</i> L.)

Fertilization and Fruit Initiation

Forbidden Fruit: Dominance Relationships and the Control of Shoot Architecture

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