Hormonal interactions underlying parthenocarpic fruit formation in horticultural crops

Area of Science:

• Horticultural Science
• Plant Physiology
• Agricultural Biotechnology

Background:

• Parthenocarpy, the development of fruit without fertilization, is crucial in horticultural crops (Cucurbitaceae, Solanaceae, Rosaceae).
• This trait offers benefits like reduced yield loss from environmental stress and consumer-preferred seedless fruits.

Purpose of the Study:

• To review the induction of parthenocarpic fruit using plant hormones.
• To elucidate the molecular mechanisms underlying parthenocarpic fruit formation.
• To identify research gaps and future directions in horticultural crops.

Main Methods:

• Review of existing literature on hormone-induced parthenocarpy.
• Analysis of molecular pathways involving plant hormones in fruit set.
• Synthesis of information on hormonal crosstalk in parthenocarpic development.

Main Results:

• Hormones such as auxins (e.g., 2,4-D), cytokinins (e.g., Forchlorfenuron), gibberellic acids, and brassinosteroids can induce parthenocarpic fruit development.
• Key plant hormones (auxins, gibberellins, cytokinins) initiate fruit set, with contributions from ethylene, brassinosteroids, and melatonin.
• Complex hormonal interactions, including synergistic and antagonistic crosstalk, regulate parthenocarpic fruit formation.

Conclusions:

• Plant hormone application is a viable method for inducing parthenocarpy in horticultural crops.
• Understanding the intricate molecular mechanisms and hormonal crosstalk is essential for optimizing parthenocarpic fruit development.
• Further research is needed to address knowledge gaps and advance parthenocarpy in agriculture.