Article
Plant Sciences
Peihua Du, Baoying Yin, Shasha Zhou, Zhongyong Li, Xueying Zhang, Yang Cao, Ruoxuan Han, Congjian Shi, Bowen Liang, Jizhong Xu
Summary: This study found that melatonin and dopamine play regulatory roles in the response of apple seedlings to low concentrations of NH4+, improving plant growth and nutrient absorption.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2022)
Article
Biotechnology & Applied Microbiology
Zhijuan Sun, Jianyu Li, Dianming Guo, Tianchao Wang, Yike Tian, Changqing Ma, Xiaoli Liu, Caihong Wang, Xiaodong Zheng
Summary: In this study, it was found that an appropriate concentration of melatonin (MT) can alleviate KCl stress in Malus hupehensis by regulating K+ efflux and compartmentalization. Additionally, the transcription factor gene MdWRKY53 was shown to enhance KCl tolerance in apple by increasing K+ efflux and compartmentalization. Furthermore, the downstream target genes MdGORK1 and MdNHX2 were identified and found to play important roles in K+ homeostasis and KCl tolerance in apple.
PLANT BIOTECHNOLOGY JOURNAL
(2023)
Article
Agronomy
Yang Cao, Peihua Du, Baoying Yin, Shasha Zhou, Zhongyong Li, Xueying Zhang, Jizhong Xu, Bowen Liang
Summary: This study investigated the effects of melatonin and dopamine on the waterlogging resistance mechanisms in apple plants and the microbial community in the rhizosphere under waterlogging stress. The results showed that melatonin and dopamine enhanced antioxidant enzyme activity, promoted nitrogen uptake and utilization, and regulated specific microbial communities, alleviating the inhibitory effects of waterlogging stress on apple plant growth and development.
Article
Horticulture
Zhijun Zhang, Jing Guo, Chao Yang, Yang Ma, Shu Gao, Qianwei Liu, Jing Zhang, Fengwang Ma, Chao Li
Summary: Through experiments on Malus hupehensis leaves, it was found that exogenous dopamine can delay leaf senescence by increasing chlorophyll content and photosynthetic efficiency, reducing electrolyte leakage and malondialdehyde content, suppressing the expression of senescence-related genes and chlorophyll degradation genes, enhancing antioxidant enzyme activity, reducing reactive oxygen species levels, decreasing the content of senescence-promoting phytohormones and their signaling pathways, and inhibiting the degradation of soluble sugars.
SCIENTIA HORTICULTURAE
(2023)
Article
Plant Sciences
Junyuan Shi, Mi Xun, Jianfei Song, Jiaqi Li, Weiwei Zhang, Hongqiang Yang
Summary: This study found that multi-walled nanotubes (MWCNTs) could enter the root system of apple and promote root growth, increase root number and activity, and enhance the absorption and utilization efficiency of nitrate by the plant. Meanwhile, MWCNTs can also regulate the expression of related genes, enhance nitrate reductase activity, and improve the distribution and assimilation of nitrate in the apple root system. These findings are of great significance for improving the nitrogen utilization efficiency of fruit trees.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Zhijuan Sun, Yawen Zou, Cheng Xie, Lei Han, Xiaodong Zheng, Yike Tian, Changqing Ma, Xiaoli Liu, Caihong Wang
Summary: This study found that exogenous brassinolide (BL) can enhance the alkaline stress resistance of M. hupehensis seedlings. The main mechanisms include regulating rhizosphere pH, promoting Ca2+ and Mg2+ absorption, decreasing rhizosphere pH, alleviating ion toxicity, balancing osmotic stress, and reducing oxidative damage.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Tingting Li, Yuqi Li, Zhijuan Sun, Xiangli Xi, Guangli Sha, Changqing Ma, Yike Tian, Caihong Wang, Xiaodong Zheng
Summary: The study reveals that resveratrol plays a positive role in the response of apple trees to KCl stress, alleviating the effects of KCl stress on apple seedlings and maintaining their photosynthetic capacity. Resveratrol can enhance antioxidant enzyme activities, reduce electrolyte leakage, and regulate ion homeostasis in apple cells under KCl stress.
FRONTIERS IN PLANT SCIENCE
(2021)
Review
Biochemistry & Molecular Biology
Pengcheng Li, Jiaqi Tan, Mi Xiao, Xu Cai, Hongkun Xue, Hansong Yu
Summary: Malus hupehensis (MH), a natural resource, contains various active ingredients and has shown a variety of biological activities, such as antioxidant, hypoglycemic, hypolipidemic, anti-cancer, and anti-inflammatory activities. This paper reviews the active components and biological activities of MH to promote research and provide a reference for its application and development.
Article
Plant Sciences
Changqing Ma, Chuanjie Bian, Wenjie Liu, Zhijuan Sun, Xiangli Xi, Dianming Guo, Xiaoli Liu, Yike Tian, Caihong Wang, Xiaodong Zheng
Summary: Exogenous strigolactone analog (GR24) treatment effectively alleviated salinity-alkalinity stress in apple seedlings by regulating ion balance, eliminating reactive oxygen species, alleviating high pH stress, and increasing endogenous substance contents.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Tengteng Gao, Xiaomin Liu, Shuo Xu, Xi Yu, Danni Zhang, Kexin Tan, Yi Zhou, Xumei Jia, Zhijun Zhang, Fengwang Ma, Chao Li
Summary: This study reveals the association between MdASMT9-mediated melatonin biosynthesis and nitrogen absorption in apple plants under N-deficiency conditions. Exogenous and endogenous melatonin treatment can improve the tolerance of apple plants to nitrogen deficiency by enhancing light harvesting and heat transfer capability and modulating amino acid metabolism. MdHY5 is involved in the melatonin-mediated promotion of MdNRT2.1 and MdNRT2.4 expression, ultimately enhancing nitrogen absorption.
Article
Plant Sciences
Qi Chen, Yanpeng Wang, Zhijun Zhang, Xiaomin Liu, Chao Li, Fengwang Ma
Summary: This study explored the function of arginine in the growth of apple plants under nitrogen deficiency and found that exogenous arginine can alleviate nitrogen deficiency stress and improve the absorption and use of nitrogen, phosphorus, and potassium. Arginine also affects the content of metabolites, amino acids, and antioxidants, promoting photosynthetic capacity and improving the tolerance of apple plants to nitrogen deficiency.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Food Science & Technology
Guorong Li, Ying Yang, Jiao Yang, Yujie Suo, Hailong Xu, Ping Liu, Junzhi Wang, Gaigai Deng, Tianyan Feng
Summary: This study demonstrated that the extracts of MH have hepatoprotective effects against RFP+INH-induced liver injury, by reducing liver function markers, increasing antioxidant levels, and reducing pathological tissue damage.
JOURNAL OF FUNCTIONAL FOODS
(2021)
Article
Horticulture
Jie Yang, Jingjing Yang, Lingling Zhao, Liang Gu, Fanlin Wu, Wei Tian, Yadong Sun, Shaoli Zhang, Hongyan Su, Lei Wang
Summary: In this study, two MhMIOXs were cloned from Malus hupehensis Rehd. and their expression was significantly induced under NaCl stress. Heterologous expression of MhMIOX1/2 in poplar and Arabidopsis showed that MhMIOX2 overexpression decreased MI content and improved salt stress tolerance. Overexpression of MhMIOX2 also led to decreased H2O2 and MDA content, as well as elevated activity of ROS-scavenging enzymes in transgenic poplar under salt stress conditions.
SCIENTIA HORTICULTURAE
(2021)
Article
Plant Sciences
Huan Li, Ting-Ting Yu, Yuan-Sheng Ning, Hao Li, Wei-Wei Zhang, Hong-Qiang Yang
Summary: The study identified 115 known miRNAs and 15 predicted novel miRNAs in Malus hupehensis roots, as well as analyzed 175 miRNA target genes. By validating the expression levels of miRNAs and target genes, it was found that H2S pretreatment specifically regulated certain miRNAs and improved root architecture. Overall, the findings suggest that a miRNA-mediated regulatory network is involved in the H2S mitigation of alkaline salt stress in Malus hupehensis roots.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Tingting Zhou, Lifang Cao, Kaixu Hu, Xinyi Yu, Shenchun Qu
Summary: Apple leaf spot disease caused by A. alternata AP is a severe fungal disease that affects apple cultivation. The miR164-NAC21/22 module plays a pivotal role in apple resistance against this disease by regulating JA signaling.