Integrated GWAS, BSA-seq, and RNA-seq analyses to identify candidate genes associated with male fertility trait in peach.

Male sterility in peach (Prunus persica L.), characterized by the absence of fertile pollen grains in the anther, is determined by a recessive allele in homozygosis of the major gene located on chromosome 6. Developing tightly linked molecular markers can help identify appropriate peach parents or male-sterile plants for early culling in segregating progenies, thereby increasing breeding efficiency.

Hydrogen sulfide enhances kiwifruit resistance to soft rot by regulating jasmonic acid signaling pathway.

As the third active gas signal molecule in plants, hydrogen sulfide (HS) plays important roles in physiological metabolisms and biological process of fruits and vegetables during postharvest storage. In the present study, the effects of HS on enhancing resistance against soft rot caused by Botryosphaeria dothidea and the involvement of jasmonic acid (JA) signaling pathway in kiwifruit during the storage were investigated. The results showed that 20 μL L HS fumigation restrained the disease incidence of B.

Gum arabic coating alleviates chilling injury of cold-stored peach by regulating reactive oxygen species, phenolic, and sugar metabolism.

In this study, gum arabic (GA) coating was employed to mitigate chilling injury in peach fruit, and it was observed that 10% GA coating exhibited the most favorable effect. GA coating significantly inhibited the decline of AsA content and enhanced antioxidant enzyme activity in peach fruit, thereby enhancing reactive oxygen species (ROS) scavenging rate while reducing its accumulation. Simultaneously, GA coating inhibited the activity of oxidative degradation enzymes for phenolics and enhanced synthase activity, thus maintaining higher levels of total phenolics and flavonoids in fruits.

Apple polyphenols delay postharvest senescence and quality deterioration of 'Jinshayou' pummelo fruit during storage.

Introduction: Apple polyphenols (AP), derived from the peel of mature-green apples, are widely used as natural plant-derived preservatives in the postharvest preservation of numerous horticultural products.

Methods: The goal of this research was to investigate how AP (at 0.5% and 1.

Amelioration of Chilling Injury by Fucoidan in Cold-Stored Cucumber via Membrane Lipid Metabolism Regulation.

Cucumber fruit is very sensitive to chilling injury, which rapidly depreciates their commodity value. Herein, the effect of fucoidan treatment on cucumber under cold stress were investigated. Fucoidan treatment of cold-stored cucumber alleviated the occurrence of chilling injury, delayed weight loss, lowered electrolyte leakage and respiration rate, and retarded malondialdehyde accumulation.

Fucoidan treatment alleviates chilling injury in cucumber by regulating ROS homeostasis and energy metabolism.

Introduction: Chilling injury is a major hindrance to cucumber fruit quality during cold storage.

Methods And Results: In this study, we evaluated the effects of fucoidan on fruit quality, reactive oxygen species homeostasis, and energy metabolism in cucumbers during cold storage. The results showed that, compared with the control cucumber fruit, fucoidan-treated cucumber fruit exhibited a lower chilling injury index and less weight loss, as well as reduced electrolyte leakage and malondialdehyde content.

An Antifungal Role of Hydrogen Sulfide on and Amino Acid Metabolism Involved in Disease Resistance Induced in Postharvest Kiwifruit.

is a major pathogen responsible for postharvest kiwifruit soft rot. This study aimed to determine the influence of hydrogen sulfide (HS) on postharvest resistance to kiwifruit soft rot and the antifungal role of HS against . The results indicated that HS (20 μl L) restricted the lesion area following inoculation with .

Lignin Biosynthesis Pathway and Redox Balance Act Synergistically in Conferring Resistance against Infection in 7-Demethoxytylophorine-Treated Navel Orange.

7-Demethoxytylophorine (DEM), a natural water-soluble phenanthroindolizidine alkaloid, has a great potential for suppression of growth. In the present study, we investigated the ability of DEM to confer resistance against in harvested "Newhall" navel orange and the underlying mechanism. Results from the experiment showed that DEM treatment delayed blue mold development.

Antofine Triggers the Resistance Against in Ponkan Fruit by Driving AsA-GSH Cycle and ROS-Scavenging System.

Postharvest fungal infection can accelerate the quality deterioration of Ponkan fruit and reduce its commodity value. is the causal pathogen of blue mold in harvested citrus fruits, not only causing huge fungal decay but also leading to quality deterioration. In our preliminary study, antofine (ATF) was found to have a great potential for significant suppression of growth.

Ethylene-induced potassium transporter AcKUP2 gene is involved in kiwifruit postharvest ripening.

Background: Potassium (K) is important in the regulation of plant growth and development. It is the most abundant mineral element in kiwifruit, and its content increases during fruit ripening. However, how K transporter works in kiwifruit postharvest maturation is not yet clear.

AcERF1B and AcERF073 Positively Regulate Indole-3-acetic Acid Degradation by Activating Transcription during Postharvest Kiwifruit Ripening.

Ethylene can accelerate the postharvest ripening process of kiwifruit, while indole-3-acetic acid (IAA) delays it. However, the molecular mechanism by which ethylene regulates IAA degradation is unclear. Here, we found that ethephon promotes the degradation of free IAA in kiwifruit.

Genome-wide analysis of valine-glutamine motif-containing proteins related to abiotic stress response in cucumber (Cucumis sativus L.).

Background: Cucumber (Cucumis sativus L.) is one of the most important economic crops and is susceptible to various abiotic stresses. The valine-glutamine (VQ) motif-containing proteins are plant-specific proteins with a conserved "FxxhVQxhTG" amino acid sequence that regulates plant growth and development.

Hydrogen Sulfide Inhibits Enzymatic Browning of Fresh-Cut Chinese Water Chestnuts.

This work investigates the role of hydrogen sulfide (HS) in the browning and regulating the antioxidant defensive system in fresh-cut Chinese water chestnuts. The samples were fumigated with 0, 10, and 15 μl L of HS and stored at 10°C for 8 days. The results indicated that the HS treatment significantly inhibited the browning of fresh-cut Chinese water chestnuts, reduced superoxide anion ( ) production rate and HO content accumulation, promoted the increase of total phenol content, and enhanced activities of catalase (CAT), superoxide dismutase (SOD), ascorbate peroxidase (APX), and glutathione reductase (GR) ( < 0.

AcWRKY40 mediates ethylene biosynthesis during postharvest ripening in kiwifruit.

WRKY transcription factors belong to a superfamily that is involved in many important biological processes, including plant development and senescence. However, little is known about the transcriptional regulation mechanisms of WRKY genes involved in kiwifruit postharvest ripening. Here, we isolated a WRKY gene from the kiwifruit genome and named it AcWRKY40.

Group-C/S1 bZIP heterodimers regulate MdIPT5b to negatively modulate drought tolerance in apple species.

Cytokinins play a central role in delaying senescence, reducing oxidative damage and maintaining plant growth during drought. This study showed that the ectopic expression of ProRE-deleted MdIPT5b, a key enzyme involved in cytokinin metabolism, increased the drought tolerance of transgenic Malus domestica (apple) callus and Solanum lycopersicum (tomato) seedlings by maintaining cytokinin homeostasis, and thus maintaining redox balance. Under restricted watering regimes, the yields of transgenic tomato plants were enhanced.

Mitigating effects of chitosan coating on postharvest senescence and energy depletion of harvested pummelo fruit response to granulation stress.

The effect of chitosan coating exposure on juice sac granulation and energy metabolism in harvested pummelo fruit was investigated. Pummelo fruits were exposed to 1.5% chitosan coating, and then stored at 20 ± 2 °C for about 150 days.

Suppression on postharvest juice sac granulation and cell wall modification by chitosan treatment in harvested pummelo (Citrus grandis L. Osbeck) stored at room temperature.

Deposition of both lignin and cellulose accompanied by juice sac granulation is widespread in harvested citrus fruit. Hence, measures to suppress postharvest granulation of 'Majiayou' pummelo is of great importance. The fruit was treated with 1.

Comprehensive Characterization of Fruit Volatiles and Nutritional Quality of Three Cucumber ( L.) Genotypes from Different Geographic Groups after Bagging Treatment.

Bagging is widely practiced to produce high quality and unblemished fruit; however, little is currently known about the effect of bagging on flavor and nutritional quality of cucumber fruits. Here we determined the influence of bagging on fruit quality of cucumber ( L.) using three genotypes from different geographic groups.

Effects of Hot Air Treatments on Postharvest Storage of Newhall Navel Orange.

The effects of hot air flow (HAF) treatment on the postharvest storage of 'Newhall' navel oranges were investigated in this study. Studies were conducted with two separate sections. First of all, the effects of HAF at 37 °C for 36 h, for 48 h, and for 60 h were tested on fruit decay and weight loss.

Identification and Expression Analysis of in Kiwifruit () During Postharvest Process.

In plants, the Gretchen (GH3) protein is involved in free auxin (IAA) and amino acid conjugation, thus controlling auxin homeostasis. To date, many gene families have been identified from different plant species. However, the gene family in kiwifruit () has not been reported.

Downregulation of the auxin transporter gene SlPIN8 results in pollen abortion in tomato.

SlPIN8 is expressed specifically within tomato pollen, and that it is involved in tomato pollen development and intracellular auxin homeostasis. The auxin (IAA) transport protein PIN-FORMED (PIN) plays key roles in various aspects of plant development. The biological role of the auxin transporter SlPIN8 in tomato development remains unclear.

Natural variation in cytokinin maintenance improves salt tolerance in apple rootstocks.

Plants experiencing salt-induced stress often reduce cytokinin levels during the early phases of stress-response. Interestingly, we found that the cytokinin content in the apple rootstock "robusta" was maintained at a high level under salt stress. Through screening genes involved in cytokinin biosynthesis and catabolism, we found that the high expression levels of IPT5b in robusta roots were involved in maintaining the high cytokinin content.

MdPIN1b encodes a putative auxin efflux carrier and has different expression patterns in BC and M9 apple rootstocks.

Lower promoter activity is closely associated with lower MdPIN1b expression in the M9 interstem, which might contribute to the dwarfing effect in apple trees. Apple trees grafted onto dwarfing rootstock Malling 9 (M9) produce dwarfing tree architecture with high yield and widely applying in production. Previously, we have reported that in Malus 'Red Fuji' (RF) trees growing on M9 interstem and Baleng Crab (BC) rootstock, IAA content was relatively higher in bark tissue of M9 interstem than that in scion or rootstock.