Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency

Taian, China

Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency

Taian, China
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Liu J.,Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency | Bi H.-G.,Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency | Li Q.-M.,Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency | Ai X.-Z.,Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency
Zhiwu Shengli Xuebao/Plant Physiology Journal | Year: 2015

The effect of soil moisture on the photosynthesis and antioxidant enzyme activities of 'Jinyou 35' cucumber (Cucumis sativa) seedlings under low temperature (8℃/5℃, day/night) was investigated. The soil moisture was controlled to 80%-90% (T1), 70%-80% (T2), 60%-70% (T3) and 50%-60% (T4) with weighing method. 80%-90% moisture and normal temperature treatment was used as the control. The results revealed that the chilling injury indexes of T2 and T3 were the lowest and T1 the highest, the electrolyte leakage (EL) of T2 and T3 were the lowest either, but T4 the highest, among the four treatments under chilling stress. Chilling stress leds to significant decreases in photosynthetic rate (Pn), stomatal conductance (Gs), transpiration rate (Tr), activities of ribulose 1,5-bisphosphate carboxylase/oxygenase (RuBisCO) and RuBisCO activase (RCA), actual photochemical efficiency of PSII (ΦPSII), maximum photochemical efficiency (Fv/Fm), the antenna transformation efficiency (Fv'/Fm'), whereas increases in intercellular CO2 concentration (Ci) and initial fluorescence (Fo). T2 and T3 showed lower reductions in Pn, Gs, Tr, activities of RuBisCO and RCA, ΦPSII, Fv/Fm and Fv'/Fm', and lower increases in Ci and Fo, compared with T1 and T4 under chilling stress. Malondialdehyde (MDA) contents of T2 and T3 were the lowest and T4 the highest among the four treatments. On the contrary, T2 and T3 showed higher activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), ascorbate peroxidase (APX) and glutathione reductase (GR) than those of T1 and T4 under chilling stress. These data suggest that moderate water control increases the photosynthesis adaptability of cucumber seedlings under low temperature. The mechanism might be the observed increase in scavenging ability of reactive oxygen species by enhancing the antioxidant enzyme activities, alleviating low temperature photoinhibition, consequently maintaining higher photosynthetic activity, and heightening the chillingtolerance. © 2015, Science Press. All right reserved.


Chen M.,Shandong Agricultural University | Chen M.,Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency | Ji M.,Shandong Agricultural University | Ji M.,Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency | And 12 more authors.
Frontiers in Plant Science | Year: 2016

Golden2-like (GLK) transcription factors are members of the GARP family of Myb transcription factors with an established relationship to chloroplast development in the plant kingdom. In the last century, Golden2 was proposed as a second golden producing factor and identified as controlling cellular differentiation in maize leaves. Then, GLKs were also found to play roles in disease defense and their function is conserved in regulating chloroplast development. Recently, research on GLKs has rapidly increased and shown that GLKs control chloroplast development in green and non-green tissues. Moreover, links between phytohormones and GLKs were verified. In this mini-review, we summarize the history, conservation, function, potential targets and degradation of GLKs. © 2016 Chen, Ji, Wen, Liu, Li, Chen, Gao and Li.


Liu L.,Shandong Agricultural University | Liu L.,Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency | Ji M.-L.,Shandong Agricultural University | Ji M.-L.,Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency | And 12 more authors.
Food Science and Nutrition | Year: 2016

Strawberry fruits (cv. Benihoppe, Tochiotome, Sachinoka, and Guimeiren) were harvested and evaluated the flavor and nutritional parameters. By principal component analysis and hierarchical clustering analysis, differences were observed based on the volatile compounds composition, sugar and acid concentration, sweetness, and total soluble sugars/total organic acids of the four varieties. A total of 37, 48, 65, and 74 volatile compounds were identified and determined in cv. Benihoppe, Tochiotome, Sachinoka, and Guimeiren strawberry fruits extracted by head-space solid-phase microextraction (HS-SPME), respectively. Esters significantly dominated the chemical composition of the four varieties. Furaneol was detected in cultivars of Sachinoka and Guimeiren, but mesifuran was only found in cv. Tochiotome. Tochiotome and Sachinoka showed higher content of linalool and (E)-nerolidol. Sachinoka showed the highest content of total sugars and total acids. Guimeiren showed higher sweetness index than the other three cultivars. Firmness of Tochiotome was highest among all the varieties. The highest total soluble solids TSS value was found in cv. Sachinoka, followed by the Guimeiren and Tochiotome varieties. Sachinoka had the highest titratable acidity TA value. The content of ascorbic acid (AsA) of cv. Tochiotome was higher than the others, but there was no significant difference in cultivars of Benihoppe, Tochiotome, and Sachinoka. Fructose and glucose were the major sugars in all cultivars. Citric acid was the major organic acid in cv. Tochiotome, cv. Sachinoka, and cv. Guimeiren. Tochiotome had higher ratios of TSS/TA and total sugars/total organic acids than others, arising from its lower acid content. The order of the comprehensive evaluation score was Sachinoka>Guimeiren>Tochiotome>Benihoppe. © 2016 The Authors. Food Science & Nutrition published by Wiley Periodicals, Inc.


Sun M.-Y.,Shandong Agricultural University | Sun M.-Y.,Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency | Fu X.-L.,Shandong Agricultural University | Fu X.-L.,Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency | And 14 more authors.
Plant Physiology and Biochemistry | Year: 2016

Dormancy is a biological characteristic developed to resist the cold conditions in winter. The bZIP transcription factors are present exclusively in eukaryotes and have been identified and classified in many species. bZIP proteins are known to regulate numerous biological processes, however, the role of bZIP in bud dodormancy has not been studied extensively. In total, 50 PpbZIP transcription factor-encoding genes were identified and categorized them into 10 groups (A–I and S). Similar intron/exon structures, additional conserved motifs, and DNA-binding site specificity supported our classification scheme. Additionally, chromosomal distribution and collinearity analyses suggested that expansion of the PpbZIP transcription factor family was due to segment/chromosomal duplications. We also predicted the dimerization properties based on characteristic features of the leucine zipper and classified PpbZIP proteins into 23 subfamilies. Furthermore, qRT-PCR results indicated that PpbZIPs genes may be involved in regulating dormancy. The same gene of different species might participate in different regulating networks through interactions with specific partners. Our expression profiling results complemented the microarray data, suggesting that co-expression patterns of bZIP transcription factors during dormancy differed among deciduous fruit trees. Our findings further clarify the molecular characteristics of the PpbZIP transcription factor family, including potential gene functions during dormancy. This information may facilitate further research on the evolutionary history and biological functions of bZIP proteins in peach and other rosaceae plants. © 2016 Elsevier Masson SAS


Wang D.,Shandong Agricultural University | Wang D.,Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency | Gao Z.,Shandong Agricultural University | Gao Z.,Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency | And 12 more authors.
Frontiers in Plant Science | Year: 2016

Dormancy inhibits seed and bud growth of perennial plants until the environmental conditions are optimal for survival. Previous studies indicated that certain co-regulation pathways exist in seed and bud dormancy. In our study, we found that seed and bud dormancy are similar to some extent but show different reactions to chemical treatments that induce breaking of dormancy. Whether the abscisic acid (ABA) regulatory networks are similar in dormant peach seeds and buds is not well known; however, ABA is generally believed to play a critical role in seed and bud dormancy. In peach, some genes putatively involved in ABA synthesis and catabolism were identified and their expression patterns were studied to learn more about ABA homeostasis and the possible crosstalk between bud dormancy and seed dormancy mechanisms. The analysis demonstrated that two 9-cis-epoxycarotenoid dioxygenase-encoding genes seem to be key in regulating ABA biosynthesis to induce seed and bud dormancy. Three CYP707As play an overlapping role in controlling ABA inactivation, resulting in dormancy-release. In addition, Transcript analysis of ABA metabolism-related genes was much similar demonstrated that ABA pathways was similar in the regulation of vegetative and flower bud dormancy, whereas, expression patterns of ABA metabolism-related genes were different in seed dormancy showed that ABA pathway maybe different in regulating seed dormancy in peach. © 2016 Wang, Gao, Du, Xiao, Tan, Chen, Li and Gao.


Chen M.,Shandong Agricultural University | Chen M.,Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency | Tan Q.,Shandong Agricultural University | Tan Q.,Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency | And 14 more authors.
Molecular Genetics and Genomics | Year: 2016

Bud dormancy in deciduous fruit trees is an important adaptive mechanism for their survival in cold climates. The WRKY genes participate in several developmental and physiological processes, including dormancy. However, the dormancy mechanisms of WRKY genes have not been studied in detail. We conducted a genome-wide analysis and identified 58 WRKY genes in peach. These putative genes were located on all eight chromosomes. In bioinformatics analyses, we compared the sequences of WRKY genes from peach, rice, and Arabidopsis. In a cluster analysis, the gene sequences formed three groups, of which group II was further divided into five subgroups. Gene structure was highly conserved within each group, especially in groups IId and III. Gene expression analyses by qRT-PCR showed that WRKY genes showed different expression patterns in peach buds during dormancy. The mean expression levels of six WRKY genes (Prupe.6G286000, Prupe.1G393000, Prupe.1G114800, Prupe.1G071400, Prupe.2G185100, and Prupe.2G307400) increased during endodormancy and decreased during ecodormancy, indicating that these six WRKY genes may play a role in dormancy in a perennial fruit tree. This information will be useful for selecting fruit trees with desirable dormancy characteristics or for manipulating dormancy in genetic engineering programs. © 2016 The Author(s)

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