Harnessing the power of hydrogen sulphide (H₂S) for improving fruit quality traits

Abstract

Hydrogen sulphide (H 2 S) is a gaseous molecule and originates endogenously in plants.It is considered a potential signalling agent in various physiological processes of plants. Numerous reports have examined the role of H 2 S in fruit ripening and in enhancing fruit quality traits. H 2 S coordinates the fruit antioxidant system, fruit ripening phytohormones, such as ethylene and abscisic acid, together with other ripening-related signalling molecules, including nitric oxide and hydrogen peroxide. Although many studies have increased understanding of various aspects of this complex network, there is a gap in understanding crosstalk of H 2 S with key players of fruit ripening, postharvest senescence and fruit metabolism. This review focused on deciphering fruit H 2 S metabolism, signalling and its interaction with other ripeningrelated signalling molecules during fruit ripening and postharvest storage. Moreover, we also discuss how H 2 S can be used as a tool for improving fruit quality and productivity and reducing postharvest loss of perishable fruits.

Plant hormones and neurotransmitter interactions mediate antioxidant defenses under induced oxidative stress in plants

“…SA also exerted a remedial effect on the performance of essential oils, mainly at 0.5 mM ( Fatima et al, 2022 ). Plant hormones and antioxidants play a vital role in fruit ripening, quality, and parthenocarpic fruit formation ( Irfan et al, 2021 ; Su et al, 2021 ; Sharif et al, 2022 ; Tayal et al, 2022 ). Under water-stressed conditions, foliar-applied SA reduced MDA and H 2 O 2 contents and ion leakage and increased SOD and POX activities under all irrigation regimes ( Biareh et al, 2022 ).…”

Synergistic effect of graphene oxide and silver nanoparticles as biostimulant improves the postharvest life of cut flower bird of paradise (Strelitzia reginae L.)

“…However, more commonly, the postharvest life varies from 6 to 16 d ( El-Saka et al., 1995 ; Bayogan et al., 2008 ). Growing conditions, harvest stage, different holding conditions, and criteria used for evaluating inflorescence postharvest life, and conventional methods viz ., cold storage or low temperature, and preservative solutions, could all contribute to extending the vase life of horticulture crops ( Kumari et al., 2022 ; Tayal et al., 2022 ).…”

Sugar and acid profile of loquat (Eriobotrya japonica Lindl.), enzymes assay and expression profiling of their metabolism-related genes as influenced by exogenously applied boron

“…In this process, malic acid metabolism-related enzymes including phospho enol pyruvate carboxylase (PEPC), NADP – dependent malic enzyme (NADP-ME), and NAD-malate dehydrogenase (NAD-MDH) may potentially play a role in fruit malic acid biosynthesis and degradation ( Chen et al., 2009 ; Wu and Chen, 2016 ). The first step in the production of malic acid begins in the cytosol with phospho enol pyruvate (PEP), which is then actively transported into the mitochondria and transformed to oxaloacetate (OAA) by phospho enol pyruvate carboxylase (PEPC) ( Tayal et al., 2022 ). Then, NAD-malate dehydrogenase (NAD-MDH) catalyses the condensation of OAA to produce malic acid.…”