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| 1 | Suboptimal Temperature Acclimation Enhances Chilling Tolerance by Improving Photosynthetic Adaptability and Osmoregulation Ability in Watermelon显示文摘The temperature drop of plants from the optimal requirements can increase tolerance to severe chilling stress. Photosynthesis and osmoregulators were analyzed during chilling stress to explore the adaptation mechanisms that underlie the induction of chilling tolerance in response to suboptimal temperature. The relationships of these processes to suboptimal temperature acclimation in watermelon were then determined.Suboptimal temperature-acclimated watermelon plants demonstrated tolerance during chilling stress, as indicated by the decreased electrolyte leakage and malondialdehyde accumulation compared with those non-acclimated watermelon plants. Chilling-induced photoinhibition and reduction in CO2 assimilation rate were alleviated after suboptimal temperature acclimation. The xanthophyll cycle level was enhanced by improving thermal dissipation ability and avoiding light damage. Consequently, the chilling tolerance of suboptimal temperature-acclimated watermelon plants was enhanced. The osmoregulation ability induced by suboptimal temperature acclimation protected watermelon plants against chilling injury because of the accumulation of small molecular substances, such as soluble sugar and proline. The protein levels of Rubisco activase(ClRCA) and the gene expression of the Benson–Calvin cycle simultaneously increased in suboptimal temperature-acclimated watermelon plants during chilling stress. Chilling tolerance in watermelon plants induced by suboptimal temperature acclimation is associated with enhanced photosynthetic adaptability and osmoregulation ability. | Junyang Lu Muhammad Azher Nawaz Nannan Wei Fei Cheng Zhilong Bie | 2020 | Horticultural Plant Journal2020，6，1： | 8 |
| 2 | Comprehensive Mineral Nutrition Analysis of Watermelon Grafted onto Two Different Rootstocks显示文摘Grafting is a widely used practice in fruit-bearing vegetables. However, why grafting affects plant growth, fruit yield, and quality, especially from the aspect of mineral nutrition, remains unclear. In this study, watermelon cultivar ‘Zaojia 8424' was grafted onto bottle gourd ‘Jingxinzhen1'(Lagenaria siceraria) and pumpkin ‘Qingyanzhen 1'(Cucurbita maxima × C. moschata). Non-grafted plants were used as the control. Results show that rootstock grafting significantly increases plant growth and single fruit weight of watermelon. Watermelon grafted onto rootstocks, especially pumpkin, exhibits significantly higher root volume, root surface area, and number of root tips and forks in comparison with non-grafted plants. Fruit flesh, rind firmness, and rind thickness were enhanced by grafting. However, fruit soluble solids and taste significantly decreased in plants grafted onto pumpkin. The total uptake(mg · plant^(-1)) and concentration(mg · g^(-1)DW) of N, K, Ca, Fe, Mg, and Mn in root, stem, leaf,fruit rind, and flesh were generally higher in grafted plants compared to non-grafted ones, especially for N of pumpkin rootstock-grafted plants.The total uptake of nutrients of plants grafted onto bottle gourd and pumpkin was increased by 30.41% and 49.14% at fruit development stage and by 21.33% and 47.46% at fruit maturation stage, respectively, compared with non-grafted plants. We concluded that watermelon grafting onto suitable rootstocks can increase the uptake of mineral nutrition, especially for N in the pumpkin rootstock grafted plants, thereby affecting plant growth, fruit yield, and quality. | HUANG Yuan ZHAO Liqiang KONG Qiusheng CHENG Fei NIU Mengliang XIE Junjun Muhammad Azher Nawaz BIE Zhilong | 2016 | Horticultural Plant Journal2016，2，2： | 7 |
| 3 | An insight into dwarfing mechanism:contribution of scion-rootstock interactions toward fruit crop improvement显示文摘Grafting has been commonly practiced for many centuries in the cultivation of horticultural crops.The use of dwarfing rootstocks has enabled a high-density plantation to produce maximum yield.Rootstock regulates scion phenotype,including precocity,fruit size,yield,quality characteristics,and tolerance to various environmental stresses.This review summarizes the existing information on the influence of rootstocks on scion growth and dwarfing mechanisms induced by multiple factors,including hormone signaling,photosynthesis,mineral transport,water relations,anatomical characteristics,and genetic markers.It has been shown that the complex interactions between scion and rootstock can regulate plant development and its structure.This information will provide interesting insights for future research related to rootstock-mediated dwarfing mechanisms and accelerate the breeding progress of dwarfing rootstocks. | Faisal Hayat Shahid Iqbal Daouda Coulibaly Muhammad Khuram Razzaq Muhammad Azher Nawaz Weibing Jiang Ting Shi Zhihong Gao | 2021 | Fruit Research2021，1，1： | 3 |
| 4 | 不同钾钠处理对西瓜生长和生理的影响显示文摘以‘早佳’(8424)西瓜为供试材料,在6 mmol·L^(-1)K+0 mmol·L^(-1)Na、0.01 mmol·L^(-1)K+0 mmol·L^(-1)Na、0 mmol·L^(-1)K+0.01 mmol·L^(-1)Na、0.01 mmol·L^(-1)K+5.99 mmol·L^(-1)Na、0 mmol·L^(-1)K+0.01 mmol·L^(-1)Na、6 mmol·L^(-1)K+6 mmol·L^(-1)Na条件下水培处理10 d,分别测定植株干质量,叶绿素含量、光合速率、气孔导度、K、Na浓度。结果表明,以正常供钾(6 mmol·L^(-1)K+0 mmol·L^(-1)Na)为对照,0.01 mmol·L^(-1)K+0 mmol·L^(-1)Na和0 mmol·L^(-1)K+0.01 mmol·L^(-1)Na处理下西瓜植株的干质量、光合速率和钾浓度的降低程度相当,叶片干质量分别下降了57%和58%,表明低浓度的钠起到了代替钾生理功能的作用;相反,0.01 mmol·L^(-1)K+5.99 mmol·L^(-1)Na和0 mmol·L-1K+6 mmol·L^(-1)Na处理加重了低钾胁迫对西瓜植株生长的抑制作用,植株干质量和光合速率显著下降,叶片干质量分别下降了63%和67%,光合速率下降了66%和68%,表明低钾下较高浓度的钠对西瓜产生了毒害作用;6 mmol·L^(-1)K+6 mmol·L^(-1)Na处理对西瓜植株的干质量无显著影响,但光合速率和钾浓度有所降低,光合速率下降了28%,表明正常钾水平下较高浓度的钠对植株具有一定伤害,但比低钾下钠的伤害要轻。本研究结果表明,低浓度的钠能代替钾的部分生理功能,而较高浓度的钠会对植株产生伤害,尤其是西瓜植株处于较低钾水平的情况下。 | 焦妍妍 陈晨 Muhammad Azher Nawaz 别之龙 黄远 | 2016 | 中国瓜菜2016，29，12： | 2 |
| 5 | Cloning and Characterization of a Tyrosine Aminotransferase( TAT)Gene in Gerbera hybrida显示文摘In our previous study,a gene predicted to encode a Tyrosine aminotransferase( TAT) was found to be significantly up-regulated in root rot diseased Gerbera by transcriptome sequencing. To confirm the genes and investigate the function,we cloned the gene by RT-PCR and then conduct bioinformatic analyses. In this study,a 1 537 bp long c DNA sequence of this gene( named as Gh TAT) was firstly cloned,which contained a coding region of 1 233 bp,which was predicted to encode a protein of 410 amino acids. Bioinformatic analysis showed that the Gh TAT was a stable hydrophobic protein without signal peptide. Subcellular location prediction result indicated that this protein located in chloroplast,which is the biosynthesis position of tyrosine and the derived products of tyrosine biosynthesis pathway. Moreover,typical Tyrosine aminotransferase domain was found in this protein,indicating that it is a TAT. According to the TAT-based phylogenetic analysis and similarity analysis,the closest relationship and highest similarity was found between Gh TAT and Halianthus annuus TAT,which again verified the TAT property of Gh TAT. Tyrosine aminotransferase( TAT) is the first enzyme in tyrosine biosynthesis pathway,whose products include many antioxidant substances such as tocopherols and tocotrienols. The up-regulation of Gh TAT in root rot diseased gerbera suggests that it may play an important role in response to the root rot pathogen infection. In addition,60 phosphorylation sites( accounting for 14. 6%) were found in this protein,suggesting that the expression of this protein and its encoding gene were greatly influenced by the phosphorylation reactions. | Nigarish MUNIR Min Kyaw THU Muhammad Azher NAWAZ Yuling LIN Chunzhen CHENG Zhongxiong LAI | 2018 | Asian Agricultural Research2018，10，2： | 1 |
| 6 | 南瓜砧木促进西瓜嫁接苗的氮利用效率研究显示文摘目的与意义:氮是植物生长发育所必需的大量营元素,其主要以硝酸根(NO3-)的形式被植物所吸收.嫁接作为克服土传病害,消除连作障碍的一项有效技术措施,在西瓜生产上已得到广泛应用.然而,关于嫁接西瓜氮效率的研究较少.本文以南瓜砧木为材料,研究砧木对西瓜接穗氮利用效率的影响,并探讨其中的生理机制. | 黄远 别之龙(编译) Muhammad Azher Nawaz 汪亮明 焦妍妍 陈晨 赵良 梅孟军 余云龙 | 2019 | 中国瓜菜2019，32，8： | 1 |
| 7 | 南瓜砧木嫁接提高西瓜对低镁环境的适应性显示文摘目的与意义:镁(Mg)是一种重要的矿质元素,在植物的许多生理和生化过程中起着重要作用.然而,在全世界范围内,作物经常发生缺镁的问题.西瓜作为一种重要的园艺作物,经常遭受低镁的危害.本研究旨在分析是否可以通过合适的砧木嫁接,来改善低镁条件下西瓜的生长,并阐明其潜在的生理机制. | 黄远 别之龙 焦妍妍 Muhammad Azher Nawaz 陈晨 刘力 陆珍 孔秋生 程菲 | 2019 | 中国瓜菜2019，32，8： | 0 |
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