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Zhao A, Teng X, Ma Y, Mu L, Han S, Wang S, Lei K, Ji L, Li P. First Clarification of the Mechanism of Action of the Apple Glycosyltransferase MdUGT91AJ2 Involved in the Detoxification Metabolism of the Triketone Herbicide Sulcotrione. PLANTS (BASEL, SWITZERLAND) 2024; 13:1796. [PMID: 38999636 PMCID: PMC11244407 DOI: 10.3390/plants13131796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 06/24/2024] [Accepted: 06/26/2024] [Indexed: 07/14/2024]
Abstract
Sulcotrione is a member of triketone herbicides, a class of HPPD (4-hydroxyphenylpyruvate dioxygenase) inhibitors with broad-spectrum herbicidal activity. Modifications of glycosylation mediated by glycosyltransferases (GT) are involved in plant detoxification. In this study, we analyzed chip data published online and found that eight glycosyltransferases from group A of the apple glycosyltransferase family 1 may be involved in the metabolic mechanism of detoxification of triketone herbicides. To verify this prediction, we induced apple seedlings with six types of triketone herbicides, and then detected the expression levels of eight glycosyltransferase genes through real-time PCR. We found that triketone herbicides induced up-regulation of eight glycosyltransferase genes to varying degrees, with MdUGT91AJ2 being the most significantly up-regulated by sulcotrione-induced glycosyltransferase gene expression. Then, through in vitro enzymatic reactions and HPLC identification of glycoside substrates, it was found that the glycosyltransferase MdUGT91AJ2 had the highest specific enzyme activity against the triketone herbicide sulcotrione. Furthermore, the in vivo mechanism of the glycosyltransferase MdUGT91AJ2 in the detoxification metabolism of sulcotrione was further validated by overexpressing the strain in the plant. HPLC analysis showed that the content of sulcotrione glycosides in the overexpressing strain of MdUGT91AJ2 was significantly higher than that in the wild type. This result indicated that the apple glycosyltransferase MdUGT91AJ2 can still glycosylate and modify sulfotrione in plants, and participate in its detoxification metabolism. In summary, this study identified for the first time a novel apple glycosyltransferase MdUGT91AJ2 and elucidated its mechanism of action in the detoxification and metabolism of the triketone herbicide sulfotriene.
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Affiliation(s)
- Aijuan Zhao
- State Key Laboratory for Macromolecule Drugs and Large-Scale Manufacturing, School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252059, China; (A.Z.); (Y.M.); (L.M.); (S.H.); (S.W.); (K.L.)
| | - Xiao Teng
- Rizhao Academy of Agricultural Science, Rizhao 276500, China;
| | - Yingxin Ma
- State Key Laboratory for Macromolecule Drugs and Large-Scale Manufacturing, School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252059, China; (A.Z.); (Y.M.); (L.M.); (S.H.); (S.W.); (K.L.)
| | - Lijun Mu
- State Key Laboratory for Macromolecule Drugs and Large-Scale Manufacturing, School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252059, China; (A.Z.); (Y.M.); (L.M.); (S.H.); (S.W.); (K.L.)
| | - Shibo Han
- State Key Laboratory for Macromolecule Drugs and Large-Scale Manufacturing, School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252059, China; (A.Z.); (Y.M.); (L.M.); (S.H.); (S.W.); (K.L.)
| | - Shumin Wang
- State Key Laboratory for Macromolecule Drugs and Large-Scale Manufacturing, School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252059, China; (A.Z.); (Y.M.); (L.M.); (S.H.); (S.W.); (K.L.)
| | - Kang Lei
- State Key Laboratory for Macromolecule Drugs and Large-Scale Manufacturing, School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252059, China; (A.Z.); (Y.M.); (L.M.); (S.H.); (S.W.); (K.L.)
| | - Lusha Ji
- State Key Laboratory for Macromolecule Drugs and Large-Scale Manufacturing, School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252059, China; (A.Z.); (Y.M.); (L.M.); (S.H.); (S.W.); (K.L.)
| | - Pan Li
- State Key Laboratory for Macromolecule Drugs and Large-Scale Manufacturing, School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252059, China; (A.Z.); (Y.M.); (L.M.); (S.H.); (S.W.); (K.L.)
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Lei P, Jiang Y, Zhao Y, Jiang M, Ji X, Ma L, Jin G, Li J, Zhang S, Kong D, Zhao X, Meng F. Functions of Basic Helix-Loop-Helix (bHLH) Proteins in the Regulation of Plant Responses to Cold, Drought, Salt, and Iron Deficiency: A Comprehensive Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:10692-10709. [PMID: 38712500 DOI: 10.1021/acs.jafc.3c09665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Abiotic stresses including cold, drought, salt, and iron deficiency severely impair plant development, crop productivity, and geographic distribution. Several bodies of research have shed light on the pleiotropic functions of BASIC HELIX-LOOP-HELIX (bHLH) proteins in plant responses to these abiotic stresses. In this review, we mention the regulatory roles of bHLH TFs in response to stresses such as cold, drought, salt resistance, and iron deficiency, as well as in enhancing grain yield in plants, especially crops. The bHLH proteins bind to E/G-box motifs in the target promoter and interact with various other factors to form a complex regulatory network. Through this network, they cooperatively activate or repress the transcription of downstream genes, thereby regulating various stress responses. Finally, we present some perspectives for future research focusing on the molecular mechanisms that integrate and coordinate these abiotic stresses. Understanding these molecular mechanisms is crucial for the development of stress-tolerant crops.
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Affiliation(s)
- Pei Lei
- Jilin Provincial Key Laboratory of Tree and Grass Genetics and Breeding, College of Forestry and Grassland Science, Jilin Agricultural University, Changchun 130118, China
| | - Yaxuan Jiang
- College of Life Science, Northeast Forestry University, Hexing Road 26, Harbin 150040, China
| | - Yong Zhao
- College of Life Sciences, Baicheng Normal University, Baicheng 137099, China
| | - Mingquan Jiang
- Jilin Province Product Quality Supervision and Inspection Institute, Changchun 130022, China
| | - Ximei Ji
- Jilin Provincial Key Laboratory of Tree and Grass Genetics and Breeding, College of Forestry and Grassland Science, Jilin Agricultural University, Changchun 130118, China
- College of Life Science, Northeast Forestry University, Hexing Road 26, Harbin 150040, China
| | - Le Ma
- College of Life Science, Northeast Forestry University, Hexing Road 26, Harbin 150040, China
| | - Guangze Jin
- College of Life Science, Northeast Forestry University, Hexing Road 26, Harbin 150040, China
| | - Jianxin Li
- College of Life Science, Northeast Forestry University, Hexing Road 26, Harbin 150040, China
| | - Subin Zhang
- College of Life Science, Northeast Forestry University, Hexing Road 26, Harbin 150040, China
| | - Dexin Kong
- College of Life Science, Northeast Forestry University, Hexing Road 26, Harbin 150040, China
| | - Xiyang Zhao
- Jilin Provincial Key Laboratory of Tree and Grass Genetics and Breeding, College of Forestry and Grassland Science, Jilin Agricultural University, Changchun 130118, China
| | - Fanjuan Meng
- Jilin Provincial Key Laboratory of Tree and Grass Genetics and Breeding, College of Forestry and Grassland Science, Jilin Agricultural University, Changchun 130118, China
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Hong MJ, Ko CS, Kim JB, Kim DY. Identification and transcriptomic profiling of salinity stress response genes in colored wheat mutant. PeerJ 2024; 12:e17043. [PMID: 38464747 PMCID: PMC10924784 DOI: 10.7717/peerj.17043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 02/13/2024] [Indexed: 03/12/2024] Open
Abstract
Background Salinity is a major abiotic stress that prevents normal plant growth and development, ultimately reducing crop productivity. This study investigated the effects of salinity stress on two wheat lines: PL1 (wild type) and PL6 (mutant line generated through gamma irradiation of PL1). Results The salinity treatment was carried out with a solution consisting of a total volume of 200 mL containing 150 mM NaCl. Salinity stress negatively impacted germination and plant growth in both lines, but PL6 exhibited higher tolerance. PL6 showed lower Na+ accumulation and higher K+ levels, indicating better ion homeostasis. Genome-wide transcriptomic analysis revealed distinct gene expression patterns between PL1 and PL6 under salt stress, resulting in notable phenotypic differences. Gene ontology analysis revealed positive correlations between salt stress and defense response, glutathione metabolism, peroxidase activity, and reactive oxygen species metabolic processes, highlighting the importance of antioxidant activities in salt tolerance. Additionally, hormone-related genes, transcription factors, and protein kinases showed differential expression, suggesting their roles in the differential salt stress response. Enrichment of pathways related to flavonoid biosynthesis and secondary metabolite biosynthesis in PL6 may contribute to its enhanced antioxidant activities. Furthermore, differentially expressed genes associated with the circadian clock system, cytoskeleton organization, and cell wall organization shed light on the plant's response to salt stress. Conclusions Understanding these mechanisms is crucial for developing stress-tolerant crop varieties, improving agricultural practices, and breeding salt-resistant crops to enhance global food production and address food security challenges.
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Affiliation(s)
- Min Jeong Hong
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeollabuk-do, Korea
| | - Chan Seop Ko
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeollabuk-do, Korea
| | - Jin-Baek Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeollabuk-do, Korea
| | - Dae Yeon Kim
- Plant Resources, Kongju National University, Yesan-eup, Chungnam, South Korea
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Yang YY, An XH, Rui L, Liu GD, Tian Y, You CX, Wang XF. MdSnRK1.1 interacts with MdGLK1 to regulate abscisic acid-mediated chlorophyll accumulation in apple. HORTICULTURE RESEARCH 2024; 11:uhad288. [PMID: 38371633 PMCID: PMC10873579 DOI: 10.1093/hr/uhad288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 12/17/2023] [Indexed: 02/20/2024]
Abstract
Abscisic acid (ABA), as a plant hormone, plays a positive role in leaf chlorosis; however, the underlying molecular mechanism is less known. Our findings provide ABA treatment reduced the chlorophyll accumulation in apple, and Malus × domestica Sucrose Non-fermenting 1-Related Protein Kinase 1.1 (MdSnRK1.1) participates in the process. MdSnRK1.1 interacts with MdGLK1, a GOLDEN2-like transcription factor that orchestrates development of the chloroplast. Furthermore, MdSnRK1.1 affects MdGLK1 protein stability through phosphorylation. We found that Ser468 of MdGLK1 is target site of MdSnRK1.1 phosphorylation. MdSnRK1.1-mediated phosphorylation was critical for MdGLK1 binding to the target gene MdHEMA1 promoters. Collectively, our results demonstrate that ABA activates MdSnRK1.1 to degrade MdGLK1 and inhibit the accumulation of chlorophyll. These findings extend our understanding on how MdSnRK1.1 balances normal growth and hormone response.
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Affiliation(s)
- Yu-Ying Yang
- State Key Laboratory of Crop Biology, Apple Technology Innovation Center of Shandong Province, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An 271018, Shandong, China
- Key Laboratory of Chinese Herbal Medicine Biology and Cultivation, Ministry of Agriculture and Rural Affairs, Institute of Chinese Herbal Medicine, Hubei Academy of Agricultral Science, Enshi 445000, China
| | - Xiu-Hong An
- National Engineering Research Center for Agriculture in Northern Mountainous Areas, Agricultural Technology Innovation Center in Mountainous Areas of Hebei Province, Hebei Agricultural University, Baoding 071000, Hebei, China
| | - Lin Rui
- State Key Laboratory of Crop Biology, Apple Technology Innovation Center of Shandong Province, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An 271018, Shandong, China
| | - Guo-Dong Liu
- State Key Laboratory of Crop Biology, Apple Technology Innovation Center of Shandong Province, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An 271018, Shandong, China
| | - Yi Tian
- National Engineering Research Center for Agriculture in Northern Mountainous Areas, Agricultural Technology Innovation Center in Mountainous Areas of Hebei Province, Hebei Agricultural University, Baoding 071000, Hebei, China
| | - Chun-Xiang You
- State Key Laboratory of Crop Biology, Apple Technology Innovation Center of Shandong Province, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An 271018, Shandong, China
| | - Xiao-Fei Wang
- State Key Laboratory of Crop Biology, Apple Technology Innovation Center of Shandong Province, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An 271018, Shandong, China
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Mao K, Yang J, Sun Y, Guo X, Qiu L, Mei Q, Li N, Ma F. MdbHLH160 is stabilized via reduced MdBT2-mediated degradation to promote MdSOD1 and MdDREB2A-like expression for apple drought tolerance. PLANT PHYSIOLOGY 2024; 194:1181-1203. [PMID: 37930306 DOI: 10.1093/plphys/kiad579] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 11/07/2023]
Abstract
Drought stress is a key environmental factor limiting the productivity, quality, and geographic distribution of crops worldwide. Abscisic acid (ABA) plays an important role in plant drought stress responses, but the molecular mechanisms remain unclear. Here, we report an ABA-responsive bHLH transcription factor, MdbHLH160, which promotes drought tolerance in Arabidopsis (Arabidopsis thaliana) and apple (Malus domestica). Under drought conditions, MdbHLH160 is directly bound to the MdSOD1 (superoxide dismutase 1) promoter and activated its transcription, thereby triggering reactive oxygen species (ROS) scavenging and enhancing apple drought tolerance. MdbHLH160 also promoted MdSOD1 enzyme activity and accumulation in the nucleus through direct protein interactions, thus inhibiting excessive nuclear ROS levels. Moreover, MdbHLH160 directly upregulated the expression of MdDREB2A-like, a DREB (dehydration-responsive element binding factor) family gene that promotes apple drought tolerance. Protein degradation and ubiquitination assays showed that drought and ABA treatment stabilized MdbHLH160. The BTB protein MdBT2 was identified as an MdbHLH160-interacting protein that promoted MdbHLH160 ubiquitination and degradation, and ABA treatment substantially inhibited this process. Overall, our findings provide insights into the molecular mechanisms of ABA-modulated drought tolerance at both the transcriptional and post-translational levels via the ABA-MdBT2-MdbHLH160-MdSOD1/MdDREB2A-like cascade.
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Affiliation(s)
- Ke Mao
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Jie Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Yunxia Sun
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Xin Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Lina Qiu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Quanlin Mei
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Na Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
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Li X, Ma Z, Song Y, Shen W, Yue Q, Khan A, Tahir MM, Wang X, Malnoy M, Ma F, Bus V, Zhou S, Guan Q. Insights into the molecular mechanisms underlying responses of apple trees to abiotic stresses. HORTICULTURE RESEARCH 2023; 10:uhad144. [PMID: 37575656 PMCID: PMC10421731 DOI: 10.1093/hr/uhad144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 07/13/2023] [Indexed: 08/15/2023]
Abstract
Apple (Malus[Formula: see text]domestica) is a popular temperate fruit crop worldwide. However, its growth, productivity, and quality are often adversely affected by abiotic stresses such as drought, extreme temperature, and high salinity. Due to the long juvenile phase and highly heterozygous genome, the conventional breeding approaches for stress-tolerant cultivars are time-consuming and resource-intensive. These issues may be resolved by feasible molecular breeding techniques for apples, such as gene editing and marker-assisted selection. Therefore, it is necessary to acquire a more comprehensive comprehension of the molecular mechanisms underpinning apples' response to abiotic stress. In this review, we summarize the latest research progress in the molecular response of apples to abiotic stressors, including the gene expression regulation, protein modifications, and epigenetic modifications. We also provide updates on new approaches for improving apple abiotic stress tolerance, while discussing current challenges and future perspectives for apple molecular breeding.
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Affiliation(s)
- Xuewei Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ziqing Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yi Song
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Wenyun Shen
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Qianyu Yue
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Abid Khan
- Department of Horticulture, The University of Haripur, Haripur 22620, Pakistan
| | - Muhammad Mobeen Tahir
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xiaofei Wang
- State Key Laboratory of Crop Biology, Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271000, China
| | - Mickael Malnoy
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige 38098, Italy
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Vincent Bus
- The New Zealand Institute for Plant and Food Research Limited, Havelock North 4157, New Zealand
| | - Shuangxi Zhou
- Department of Biological Sciences, Macquarie University, North Ryde, NSW 2109, Australia
| | - Qingmei Guan
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
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Liu G, Rui L, Yang Y, Liu R, Li H, Ye F, You C, Zhang S. Identification and Functional Characterization of MdNRT1.1 in Nitrogen Utilization and Abiotic Stress Tolerance in Malus domestica. Int J Mol Sci 2023; 24:ijms24119291. [PMID: 37298242 DOI: 10.3390/ijms24119291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 05/13/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023] Open
Abstract
Nitrate is one of the main sources of nitrogen for plant growth. Nitrate transporters (NRTs) participate in nitrate uptake and transport, and they are involved in abiotic stress tolerance. Previous studies have shown that NRT1.1 has a dual role in nitrate uptake and utilization; however, little is known about the function of MdNRT1.1 in regulating apple growth and nitrate uptake. In this study, apple MdNRT1.1, a homolog of Arabidopsis NRT1.1, was cloned and functionally identified. Nitrate treatment induced an increased transcript level of MdNRT1.1, and overexpression of MdNRT1.1 promoted root development and nitrogen utilization. Ectopic expression of MdNRT1.1 in Arabidopsis repressed tolerance to drought, salt, and ABA stresses. Overall, this study identified a nitrate transporter, MdNRT1.1, in apples and revealed how MdNRT1.1 regulates nitrate utilization and abiotic stress tolerance.
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Affiliation(s)
- Guodong Liu
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an 271018, China
| | - Lin Rui
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an 271018, China
| | - Yuying Yang
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an 271018, China
| | - Ranxin Liu
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an 271018, China
| | - Hongliang Li
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an 271018, China
| | - Fan Ye
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an 271018, China
| | - Chunxiang You
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an 271018, China
| | - Shuai Zhang
- Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, College of Chemistry and Material Science, Shandong Agricultural University, Tai'an 271018, China
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Yu D, Wei W, Fan Z, Chen J, You Y, Huang W, Zhan J. VabHLH137 promotes proanthocyanidin and anthocyanin biosynthesis and enhances resistance to Colletotrichum gloeosporioides in grapevine. HORTICULTURE RESEARCH 2023; 10:uhac261. [PMID: 36778186 PMCID: PMC9907051 DOI: 10.1093/hr/uhac261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 11/20/2022] [Indexed: 06/18/2023]
Abstract
Proanthocyanidins (PAs) and anthocyanins are involved in the response of plants to various environmental stresses. However, the mechanism behind defense-induced PA biosynthetic regulation is still not completely elucidated, also in grapevine. This study performed a transcriptome sequencing analysis of grape berries infected with Colletotrichum gloeosporioides to highlight the induction of the VabHLH137 factor from the basic helix-loop-helix (bHLH) XII subfamily by the fungus, which appeared to be significantly co-expressed with PA-related genes. The functional analysis of VabHLH137 overexpression and knockdown in transgenic grape calli showed that it positively regulated PA and anthocyanin biosynthesis. Moreover, VabHLH137 overexpression in the grape calli significantly increased resistance to C. gloeosporioides. A yeast one-hybrid and electrophoretic mobility shift assay revealed that VabHLH137 directly bound to the VaLAR2 promoter, enhancing its activity and interacting with VaMYBPAR, a transcriptional activator of PA biosynthesis. Furthermore, transient experiments showed that although the VabHLH137 + VaMYBPAR complex activated VaLAR2 expression, it failed to further enhance VaLAR2 expression compared to VaMYBPAR alone. The findings indicated that VabHLH137 enhanced PA biosynthesis by activating of VaLAR2 expression, providing new insight into the transcriptional regulation of defense-induced PA biosynthesis in grapevine.
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Affiliation(s)
- Dan Yu
- Beijing Key Laboratory of Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100085, China
| | - Wei Wei
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Zhongqi Fan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Jianye Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Yilin You
- Beijing Key Laboratory of Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100085, China
| | - Weidong Huang
- Beijing Key Laboratory of Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100085, China
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9
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Rui L, Zhu ZQ, Yang YY, Wang DR, Liu HF, Zheng PF, Li HL, Liu GD, Liu RX, Wang X, Zhang S, You CX. Functional characterization of MdERF113 in apple. PHYSIOLOGIA PLANTARUM 2023; 175:e13853. [PMID: 36628625 DOI: 10.1111/ppl.13853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 12/10/2022] [Accepted: 01/05/2023] [Indexed: 06/17/2023]
Abstract
The AP2/ERF family is an important class of transcription factors involved in plant growth and various biological processes. One of the AP2/ERF transcription factors, RAP2.6L, participates in various stresses responses. However, the function of RAP2.6L is largely unknown in apples (Malus domestica). In this study, an apple gene homologous to Arabidopsis AtRAP2.6L, MdERF113, was analyzed by bioinformatic characterization, gene expression analysis and subcellular localization assessment. MdERF113 was highly expressed in the sarcocarp and was responsive to hormonal signals and abiotic stresses. MdERF113-overexpression apple calli were less sensitive to low temperature, drought, salinity, and abscisic acid than wild-type. Subcellular localization revealed that MdERF113 was a nuclear-localized transcription factor, and yeast experiments confirmed that MdERF113 has no autonomous activation activity. Overall, this study indicated that MdERF113 plays a role in regulating plant growth under abiotic conditions.
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Affiliation(s)
- Lin Rui
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Zi-Qi Zhu
- Shandong Provincial Research Center of Demonstration Engineering Technology for Urban and Rural Landscape, College of Forestry, Shandong Agricultural University, Tai'an, Shandong, China
| | - Yu-Ying Yang
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Da-Ru Wang
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Hao-Feng Liu
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Peng-Fei Zheng
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Hong-Liang Li
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Guo-Dong Liu
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Ran-Xin Liu
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Xiaofei Wang
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
| | - Shuai Zhang
- Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, College of Chemistry and Material Science, Shandong Agricultural University, Tai'an, Shandong, China
| | - Chun-Xiang You
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, Shandong, China
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10
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Qiao ZW, Wang DR, Wang X, You CX, Wang XF. Genome-wide identification and stress response analysis of cyclophilin gene family in apple (Malus × domestica). BMC Genomics 2022; 23:806. [PMID: 36474166 PMCID: PMC9727951 DOI: 10.1186/s12864-022-08976-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 10/29/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Cyclophilin (CYP) belongs to the immunophilin family and has peptidyl-prolyl cis-trans isomerase (PPIase) activity, which catalyzes the cis-trans isomerization process of proline residues. CYPs widely exist in eukaryotes and prokaryotes, and contain a conserved cyclophilin-like domain (CLD). Plant cyclophilins are widely involved in a range of biological processes including stress response, metabolic regulation, and growth and development. RESULT In this study, 30 cyclophilin genes on 15 chromosomes were identified from the 'Golden Delicious' apple (M. domestica) genome. Phylogenetic analysis showed that the cyclophilin family genes can be divided into three clades in Malus. Collinear analysis showed that ten gene pairs were the result of segmental duplication. Analysis of gene and protein structure further supported the phylogenetic tree and collinearity analysis. The expression of MdCYPs in different organs was higher in leaves, flowers, and fruits. Ten and eight CYPs responded to drought and salt stress, respectively. MdCYP16, a nuclear-localized MD CYP, was screened from the intersection of the two expression profiling datasets and was highly sensitive to drought and salt stress. GUS staining of transgenic Arabidopsis indicated that MdCYP16 may be involved in the regulation of abiotic stress. CONCLUSION This study systematically analyzed members of the apple cyclophilin family and confirmed the involvement of MdCYP16 as a nuclear-localized MD cyclophilin that acts in response to salt and drought stress in apple. Our work identifies members of the apple cyclophilin gene family, and provides an important theoretical basis for in-depth study of cyclophilin function. Additionally, the analysis provides candidate genes that may be involved in stress response in apple.
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Affiliation(s)
- Zhi-Wen Qiao
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Da-Ru Wang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Xun Wang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Chun-Xiang You
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China.
| | - Xiao-Fei Wang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China.
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11
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Wang DR, Yang K, Wang X, You CX. A C2H2-type zinc finger transcription factor, MdZAT17, acts as a positive regulator in response to salt stress. JOURNAL OF PLANT PHYSIOLOGY 2022; 275:153737. [PMID: 35717763 DOI: 10.1016/j.jplph.2022.153737] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 05/24/2022] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
Salt stress restricts plant growth and productivity worldwide. Zinc finger proteins play important roles in response to various abiotic plant stresses. In this research, we identified and characterized the ZAT17 gene in Malus domestica, which encodes a C2H2-type zinc finger protein. MdZAT17 has two typical conserved zinc finger domains and an ERF-associated amphiphilic repression (EAR) motif. Promoter analysis showed that MdZAT17 contains several stress-related response elements (ABRE, CGTCA-motif, and TC-rich repeats), and qRT-PCR analysis showed that the expression level of MdZAT17 was induced by various abiotic stress treatments. The overexpression of MdZAT17 improved tolerance to salt stress in apple calli. The ectopic expression of MdZAT17 in Arabidopsis enhanced salt stress tolerance and led to lower malondialdehyde (MDA) content, lower reactive oxygen species (ROS) accumulation, and greater anthocyanin accumulation under salt stress. Moreover, the overexpression of MdZAT17 transgenic apple calli and Arabidopsis reduced the sensitivity to abscisic acid (ABA). In conclusion, our results indicate that MdZAT17 plays a positive regulatory role in salt tolerance, providing a theoretical basis for further research on its molecular mechanisms.
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Affiliation(s)
- Da-Ru Wang
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China.
| | - Kuo Yang
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China.
| | - Xun Wang
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China.
| | - Chun-Xiang You
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China.
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12
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Zhou Z, Zhang L, Shu J, Wang M, Li H, Shu H, Wang X, Sun Q, Zhang S. Root Breeding in the Post-Genomics Era: From Concept to Practice in Apple. PLANTS (BASEL, SWITZERLAND) 2022; 11:1408. [PMID: 35684181 PMCID: PMC9182997 DOI: 10.3390/plants11111408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/05/2022] [Accepted: 05/23/2022] [Indexed: 06/15/2023]
Abstract
The development of rootstocks with a high-quality dwarf-type root system is a popular research topic in the apple industry. However, the precise breeding of rootstocks is still challenging, mainly because the root system is buried deep underground, roots have a complex life cycle, and research on root architecture has progressed slowly. This paper describes ideas for the precise breeding and domestication of wild apple resources and the application of key genes. The primary goal of this research is to combine the existing rootstock resources with molecular breeding and summarize the methods of precision breeding. Here, we reviewed the existing rootstock germplasm, high-quality genome, and genetic resources available to explain how wild resources might be used in modern breeding. In particular, we proposed the 'from genotype to phenotype' theory and summarized the difficulties in future breeding processes. Lastly, the genetics governing root diversity and associated regulatory mechanisms were elaborated on to optimize the precise breeding of rootstocks.
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Affiliation(s)
- Zhou Zhou
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an 271018, China; (Z.Z.); (L.Z.); (M.W.); (H.L.); (H.S.); (X.W.)
| | - Lei Zhang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an 271018, China; (Z.Z.); (L.Z.); (M.W.); (H.L.); (H.S.); (X.W.)
| | - Jing Shu
- College of Forestry Engineering, Shandong Agriculture and Engineering University, Jinan 250100, China;
| | - Mengyu Wang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an 271018, China; (Z.Z.); (L.Z.); (M.W.); (H.L.); (H.S.); (X.W.)
| | - Han Li
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an 271018, China; (Z.Z.); (L.Z.); (M.W.); (H.L.); (H.S.); (X.W.)
| | - Huairui Shu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an 271018, China; (Z.Z.); (L.Z.); (M.W.); (H.L.); (H.S.); (X.W.)
| | - Xiaoyun Wang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an 271018, China; (Z.Z.); (L.Z.); (M.W.); (H.L.); (H.S.); (X.W.)
| | - Qinghua Sun
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an 271018, China; (Z.Z.); (L.Z.); (M.W.); (H.L.); (H.S.); (X.W.)
| | - Shizhong Zhang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an 271018, China; (Z.Z.); (L.Z.); (M.W.); (H.L.); (H.S.); (X.W.)
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13
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Wang DR, Yang K, Wang X, Lin XL, Rui L, Liu HF, Liu DD, You CX. Overexpression of MdZAT5, an C2H2-Type Zinc Finger Protein, Regulates Anthocyanin Accumulation and Salt Stress Response in Apple Calli and Arabidopsis. Int J Mol Sci 2022; 23:ijms23031897. [PMID: 35163816 PMCID: PMC8836528 DOI: 10.3390/ijms23031897] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 01/30/2022] [Accepted: 01/31/2022] [Indexed: 12/19/2022] Open
Abstract
Zinc finger proteins are widely involved and play an important role in plant growth and abiotic stress. In this research, MdZAT5, a gene encoding C2H2-type zinc finger protein, was cloned and investigated. The MdZAT5 was highly expressed in flower tissues by qRT-PCR analyses and GUS staining. Promoter analysis showed that MdZAT5 contained multiple response elements, and the expression levels of MdZAT5 were induced by various abiotic stress treatments. Overexpression of MdZAT5 in apple calli positively regulated anthocyanin accumulation by activating the expressions of anthocyanin biosynthesis-related genes. Overexpression of MdZAT5 in Arabidopsis also enhanced the accumulation of anthocyanin. In addition, MdZAT5 increased the sensitivity to salt stress in apple calli. Ectopic expression of MdZAT5 in Arabidopsis reduced the expression of salt-stress-related genes (AtNHX1 and AtABI1) and improved the sensitivity to salt stress. In conclusion, these results suggest that MdZAT5 plays a positive regulatory role in anthocyanin accumulation and negatively regulates salt resistance.
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Affiliation(s)
- Da-Ru Wang
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China; (D.-R.W.); (K.Y.); (X.W.); (L.R.); (H.-F.L.)
| | - Kuo Yang
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China; (D.-R.W.); (K.Y.); (X.W.); (L.R.); (H.-F.L.)
| | - Xun Wang
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China; (D.-R.W.); (K.Y.); (X.W.); (L.R.); (H.-F.L.)
| | - Xiao-Lu Lin
- College of Plant Protection, Shandong Agricultural University, Taian 271018, China;
| | - Lin Rui
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China; (D.-R.W.); (K.Y.); (X.W.); (L.R.); (H.-F.L.)
| | - Hao-Feng Liu
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China; (D.-R.W.); (K.Y.); (X.W.); (L.R.); (H.-F.L.)
| | - Dan-Dan Liu
- College of Agriculture, Yunnan University, Kunming 650091, China
- Correspondence: (D.-D.L.); (C.-X.Y.)
| | - Chun-Xiang You
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China; (D.-R.W.); (K.Y.); (X.W.); (L.R.); (H.-F.L.)
- Correspondence: (D.-D.L.); (C.-X.Y.)
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14
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Ni L, Wang Z, Fu Z, Liu D, Yin Y, Li H, Gu C. Genome-wide Analysis of Basic Helix-Loop-Helix Family Genes and Expression Analysis in Response to Drought and Salt Stresses in Hibiscus hamabo Sieb. et Zucc. Int J Mol Sci 2021; 22:ijms22168748. [PMID: 34445454 PMCID: PMC8395896 DOI: 10.3390/ijms22168748] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 08/05/2021] [Accepted: 08/07/2021] [Indexed: 12/11/2022] Open
Abstract
The basic helix-loop-helix (bHLH) family of transcription factors is one of the most significant and biggest in plants. It is involved in the regulation of both growth and development, as well as stress response. Numerous members of the bHLH family have been found and characterized in woody plants in recent years. However, no systematic study of the bHLH gene family has been published for Hibiscus hamabo Sieb. et Zucc. In this research, we identified 162 bHLH proteins (HhbHLHs) from the genomic and transcriptomic datasets of H. hamabo, which were phylogenetically divided into 19 subfamilies. According to a gene structural study, the number of exon-introns in HhbHLHs varied between zero and seventeen. MEME research revealed that the majority of HhbHLH proteins contained three conserved motifs, 1, 4, and 5. The examination of promoter cis-elements revealed that the majority of HhbHLH genes had several cis-elements involved in plant growth and development and abiotic stress responses. In addition, the overexpression of HhbHLH2 increased salt and drought stress tolerance in Arabidopsis.
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Affiliation(s)
- Longjie Ni
- College of Forest Sciences, Nanjing Forestry University, Nanjing 210037, China; (L.N.); (Z.F.); (D.L.)
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; (Z.W.); (Y.Y.)
| | - Zhiquan Wang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; (Z.W.); (Y.Y.)
| | - Zekai Fu
- College of Forest Sciences, Nanjing Forestry University, Nanjing 210037, China; (L.N.); (Z.F.); (D.L.)
| | - Dina Liu
- College of Forest Sciences, Nanjing Forestry University, Nanjing 210037, China; (L.N.); (Z.F.); (D.L.)
| | - Yunlong Yin
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; (Z.W.); (Y.Y.)
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Huogen Li
- College of Forest Sciences, Nanjing Forestry University, Nanjing 210037, China; (L.N.); (Z.F.); (D.L.)
- Correspondence: (H.L.); (C.G.)
| | - Chunsun Gu
- College of Forest Sciences, Nanjing Forestry University, Nanjing 210037, China; (L.N.); (Z.F.); (D.L.)
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; (Z.W.); (Y.Y.)
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
- Correspondence: (H.L.); (C.G.)
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