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Chaudhary V, Kumar M, Chauhan C, Sirohi U, Srivastav AL, Rani L. Strategies for mitigation of pesticides from the environment through alternative approaches: A review of recent developments and future prospects. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120326. [PMID: 38387349 DOI: 10.1016/j.jenvman.2024.120326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 01/14/2024] [Accepted: 02/08/2024] [Indexed: 02/24/2024]
Abstract
Chemical-based peticides are having negative impacts on both the healths of human beings and plants as well. The World Health Organisation (WHO), reported that each year, >25 million individuals in poor nations are having acute pesticide poisoning cases along with 20,000 fatal injuries at global level. Normally, only ∼0.1% of the pesticide reaches to the intended targets, and rest amount is expected to come into the food chain/environment for a longer period of time. Therefore, it is crucial to reduce the amounts of pesticides present in the soil. Physical or chemical treatments are either expensive or incapable to do so. Hence, pesticide detoxification can be achieved through bioremediation/biotechnologies, including nano-based methodologies, integrated approaches etc. These are relatively affordable, efficient and environmentally sound methods. Therefore, alternate strategies like as advanced biotechnological tools like as CRISPR Cas system, RNAi and genetic engineering for development of insects and pest resistant plants which are directly involved in the development of disease- and pest-resistant plants and indirectly reduce the use of pesticides. Omics tools and multi omics approaches like metagenomics, genomics, transcriptomics, proteomics, and metabolomics for the efficient functional gene mining and their validation for bioremediation of pesticides also discussed from the literatures. Overall, the review focuses on the most recent advancements in bioremediation methods to lessen the effects of pesticides along with the role of microorganisms in pesticides elimination. Further, pesticide detection is also a big challenge which can be done by using HPLC, GC, SERS, and LSPR ELISA etc. which have also been described in this review.
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Affiliation(s)
- Veena Chaudhary
- Department of Chemistry, Meerut College, Meerut, Uttar-Pradesh, India
| | - Mukesh Kumar
- Department of Floriculture and Landscaping Architecture, College of Horticulture, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, India
| | - Chetan Chauhan
- Department of Floriculture and Landscaping Architecture, College of Horticulture, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, India
| | - Ujjwal Sirohi
- National Institute of Plant Genome Research, New Delhi, India
| | - Arun Lal Srivastav
- Chitkara University School of Engineering and Technology, Chitkara University, Himachal Pradesh, India.
| | - Lata Rani
- Chitkara School of Pharmacy, Chitkara University, Himachal Pradesh, India
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Zavaliev R, Dong X. NPR1, a key immune regulator for plant survival under biotic and abiotic stresses. Mol Cell 2024; 84:131-141. [PMID: 38103555 PMCID: PMC10929286 DOI: 10.1016/j.molcel.2023.11.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/09/2023] [Accepted: 11/16/2023] [Indexed: 12/19/2023]
Abstract
Nonexpressor of pathogenesis-related genes 1 (NPR1) was discovered in Arabidopsis as an activator of salicylic acid (SA)-mediated immune responses nearly 30 years ago. How NPR1 confers resistance against a variety of pathogens and stresses has been extensively studied; however, only in recent years have the underlying molecular mechanisms been uncovered, particularly NPR1's role in SA-mediated transcriptional reprogramming, stress protein homeostasis, and cell survival. Structural analyses ultimately defined NPR1 and its paralogs as SA receptors. The SA-bound NPR1 dimer induces transcription by bridging two TGA transcription factor dimers, forming an enhanceosome. Moreover, NPR1 orchestrates its multiple functions through the formation of distinct nuclear and cytoplasmic biomolecular condensates. Furthermore, NPR1 plays a central role in plant health by regulating the crosstalk between SA and other defense and growth hormones. In this review, we focus on these recent advances and discuss how NPR1 can be utilized to engineer resistance against biotic and abiotic stresses.
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Affiliation(s)
- Raul Zavaliev
- Howard Hughes Medical Institute, Department of Biology, Duke University, Durham, NC 27708, USA.
| | - Xinnian Dong
- Howard Hughes Medical Institute, Department of Biology, Duke University, Durham, NC 27708, USA.
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Martín-Valmaseda M, Devin SR, Ortuño-Hernández G, Pérez-Caselles C, Mahdavi SME, Bujdoso G, Salazar JA, Martínez-Gómez P, Alburquerque N. CRISPR/Cas as a Genome-Editing Technique in Fruit Tree Breeding. Int J Mol Sci 2023; 24:16656. [PMID: 38068981 PMCID: PMC10705926 DOI: 10.3390/ijms242316656] [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: 10/26/2023] [Revised: 11/20/2023] [Accepted: 11/21/2023] [Indexed: 12/18/2023] Open
Abstract
CRISPR (short for "Clustered Regularly Interspaced Short Palindromic Repeats") is a technology that research scientists use to selectively modify the DNA of living organisms. CRISPR was adapted for use in the laboratory from the naturally occurring genome-editing systems found in bacteria. In this work, we reviewed the methods used to introduce CRISPR/Cas-mediated genome editing into fruit species, as well as the impacts of the application of this technology to activate and knock out target genes in different fruit tree species, including on tree development, yield, fruit quality, and tolerance to biotic and abiotic stresses. The application of this gene-editing technology could allow the development of new generations of fruit crops with improved traits by targeting different genetic segments or even could facilitate the introduction of traits into elite cultivars without changing other traits. However, currently, the scarcity of efficient regeneration and transformation protocols in some species, the fact that many of those procedures are genotype-dependent, and the convenience of segregating the transgenic parts of the CRISPR system represent the main handicaps limiting the potential of genetic editing techniques for fruit trees. Finally, the latest news on the legislation and regulations about the use of plants modified using CRISPR/Cas systems has been also discussed.
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Affiliation(s)
- Marina Martín-Valmaseda
- Fruit Biotechnology Group, Department of Plant Breeding, CEBAS-CSIC (Centro de Edafología y Biología Aplicada del Segura-Consejo Superior de Investigaciones Científicas), Campus Universitario Espinardo, E-30100 Murcia, Spain (C.P.-C.); (N.A.)
| | - Sama Rahimi Devin
- Department of Horticultural Science, College of Agriculture, Shiraz University, Shiraz 7144165186, Iran; (S.R.D.); (S.M.E.M.)
| | - Germán Ortuño-Hernández
- Fruit Breeding Group, Department of Plant Breeding, CEBAS-CSIC (Centro de Edafología y Biología Aplicada del Segura-Consejo Superior de Investigaciones Científicas), Campus Universitario Espinardo, E-30100 Murcia, Spain; (G.O.-H.); (J.A.S.)
| | - Cristian Pérez-Caselles
- Fruit Biotechnology Group, Department of Plant Breeding, CEBAS-CSIC (Centro de Edafología y Biología Aplicada del Segura-Consejo Superior de Investigaciones Científicas), Campus Universitario Espinardo, E-30100 Murcia, Spain (C.P.-C.); (N.A.)
| | - Sayyed Mohammad Ehsan Mahdavi
- Department of Horticultural Science, College of Agriculture, Shiraz University, Shiraz 7144165186, Iran; (S.R.D.); (S.M.E.M.)
| | - Geza Bujdoso
- Research Centre for Fruit Growing, Hungarian University of Agriculture and Life Sciences, 1223 Budapest, Hungary;
| | - Juan Alfonso Salazar
- Fruit Breeding Group, Department of Plant Breeding, CEBAS-CSIC (Centro de Edafología y Biología Aplicada del Segura-Consejo Superior de Investigaciones Científicas), Campus Universitario Espinardo, E-30100 Murcia, Spain; (G.O.-H.); (J.A.S.)
| | - Pedro Martínez-Gómez
- Fruit Breeding Group, Department of Plant Breeding, CEBAS-CSIC (Centro de Edafología y Biología Aplicada del Segura-Consejo Superior de Investigaciones Científicas), Campus Universitario Espinardo, E-30100 Murcia, Spain; (G.O.-H.); (J.A.S.)
| | - Nuria Alburquerque
- Fruit Biotechnology Group, Department of Plant Breeding, CEBAS-CSIC (Centro de Edafología y Biología Aplicada del Segura-Consejo Superior de Investigaciones Científicas), Campus Universitario Espinardo, E-30100 Murcia, Spain (C.P.-C.); (N.A.)
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Zhou R, Dong Y, Liu X, Feng S, Wang C, Ma X, Liu J, Liang Q, Bao Y, Xu S, Lang X, Gai S, Yang KQ, Fang H. JrWRKY21 interacts with JrPTI5L to activate the expression of JrPR5L for resistance to Colletotrichum gloeosporioides in walnut. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 111:1152-1166. [PMID: 35765867 DOI: 10.1111/tpj.15883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 06/20/2022] [Accepted: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Walnut (Juglans regia L.) anthracnose, induced by Colletotrichum gloeosporioides, is a catastrophic disease impacting the walnut industry in China. Although WRKY transcription factors play a key role in plant immunity, the function of the WRKY gene family in walnut resistance to C. gloeosporioides is not clear. Here, through transcriptome sequencing and quantitative real-time polymerase chain reaction (qRT-PCR), we identified a differentially expressed gene, JrWRKY21, that was significantly upregulated upon C. gloeosporioides infection in walnut. JrWRKY21 positively regulated walnut resistance to C. gloeosporioides, as demonstrated by virus-induced gene silencing and transient gene overexpression. Additionally, JrWRKY21 directly interacted with the transcriptional activator of the pathogenesis-related (PR) gene JrPTI5L in vitro and in vivo, and could bind to the W-box in the JrPTI5L promoter for transcriptional activation. Moreover, JrPTI5L could induce the expression of the PR gene JrPR5L through binding to the GCCGAC motif in the promoter. Our data support that JrWRKY21 can indirectly activate the expression of the JrPR5L gene via the WRKY21-PTI5L protein complex to promote resistance against C. gloeosporioides in walnut. The results will enhance our understanding of the mechanism behind walnut disease resistance and facilitate the genetic improvement of walnut by molecular breeding for anthracnose-resistant varieties.
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Affiliation(s)
- Rui Zhou
- College of Forestry, Shandong Agricultural University, Taian, Shandong Province, China
| | - Yuhui Dong
- College of Forestry, Shandong Agricultural University, Taian, Shandong Province, China
- State Forestry and Grassland Administration Key Laboratory of Silviculture in the Downstream Areas of the Yellow River, Shandong Agricultural University, Taian, Shandong Province, China
- Shandong Taishan Forest Ecosystem Research Station, Shandong Agricultural University, Taian, Shandong Province, China
| | - Xia Liu
- Department of Science and Technology, Qingdao Agricultural University, Qingdao, Shandong Province, China
| | - Shan Feng
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020, China
| | - Changxi Wang
- College of Forestry, Shandong Agricultural University, Taian, Shandong Province, China
| | - Xinmei Ma
- College of Forestry, Shandong Agricultural University, Taian, Shandong Province, China
| | - Jianning Liu
- College of Forestry, Shandong Agricultural University, Taian, Shandong Province, China
| | - Qiang Liang
- College of Forestry, Shandong Agricultural University, Taian, Shandong Province, China
- State Forestry and Grassland Administration Key Laboratory of Silviculture in the Downstream Areas of the Yellow River, Shandong Agricultural University, Taian, Shandong Province, China
- Shandong Taishan Forest Ecosystem Research Station, Shandong Agricultural University, Taian, Shandong Province, China
| | - Yan Bao
- College of Forestry, Shandong Agricultural University, Taian, Shandong Province, China
| | - Shengyi Xu
- College of Forestry, Shandong Agricultural University, Taian, Shandong Province, China
| | - Xinya Lang
- College of Forestry, Shandong Agricultural University, Taian, Shandong Province, China
| | - Shasha Gai
- College of Forestry, Shandong Agricultural University, Taian, Shandong Province, China
| | - Ke Qiang Yang
- College of Forestry, Shandong Agricultural University, Taian, Shandong Province, China
- State Forestry and Grassland Administration Key Laboratory of Silviculture in the Downstream Areas of the Yellow River, Shandong Agricultural University, Taian, Shandong Province, China
- Shandong Taishan Forest Ecosystem Research Station, Shandong Agricultural University, Taian, Shandong Province, China
| | - Hongcheng Fang
- College of Forestry, Shandong Agricultural University, Taian, Shandong Province, China
- State Forestry and Grassland Administration Key Laboratory of Silviculture in the Downstream Areas of the Yellow River, Shandong Agricultural University, Taian, Shandong Province, China
- Shandong Taishan Forest Ecosystem Research Station, Shandong Agricultural University, Taian, Shandong Province, China
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Zang S, Qin L, Zhao Z, Zhang J, Zou W, Wang D, Feng A, Yang S, Que Y, Su Y. Characterization and Functional Implications of the Nonexpressor of Pathogenesis-Related Genes 1 (NPR1) in Saccharum. Int J Mol Sci 2022; 23:ijms23147984. [PMID: 35887330 PMCID: PMC9317693 DOI: 10.3390/ijms23147984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/13/2022] [Accepted: 07/18/2022] [Indexed: 11/16/2022] Open
Abstract
Sugarcane (Saccharum spp.) is an important sugar and energy crop worldwide. As a core regulator of the salicylic acid (SA) signaling pathway, nonexpressor of pathogenesis-related genes 1 (NPR1) plays a significant role in the response of the plant to biotic and abiotic stresses. However, there is currently no report on the NPR1-like gene family in sugarcane. In this study, a total of 18 NPR1-like genes were identified in Saccharum spontaneum and classified into three clades (clade I, II, and III). The cis-elements predicted in the promotors revealed that the sugarcane NPR1-like genes may be involved in various phytohormones and stress responses. RNA sequencing and quantitative real-time PCR analysis demonstrated that NPR1-like genes were differentially expressed in sugarcane tissues and under Sporisorium scitamineum stress. In addition, a novel ShNPR1 gene from Saccharum spp. hybrid ROC22 was isolated by homologous cloning and validated to be a nuclear-localized clade II member. The ShNPR1 gene was constitutively expressed in all the sugarcane tissues, with the highest expression level in the leaf and the lowest in the bud. The expression level of ShNPR1 was decreased by the plant hormones salicylic acid (SA) and abscisic acid (ABA). Additionally, the transient expression showed that the ShNPR1 gene plays a positive role in Nicotiana benthamiana plants’ defense response to Ralstonia solanacearum and Fusarium solani var. coeruleum. This study provided comprehensive information for the NPR1-like family in sugarcane, which should be helpful for functional characterization of sugarcane NPR1-like genes in the future.
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Affiliation(s)
- Shoujian Zang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (S.Z.); (L.Q.); (Z.Z.); (J.Z.); (W.Z.); (D.W.); (A.F.); (S.Y.)
| | - Liqian Qin
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (S.Z.); (L.Q.); (Z.Z.); (J.Z.); (W.Z.); (D.W.); (A.F.); (S.Y.)
| | - Zhennan Zhao
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (S.Z.); (L.Q.); (Z.Z.); (J.Z.); (W.Z.); (D.W.); (A.F.); (S.Y.)
| | - Jing Zhang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (S.Z.); (L.Q.); (Z.Z.); (J.Z.); (W.Z.); (D.W.); (A.F.); (S.Y.)
| | - Wenhui Zou
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (S.Z.); (L.Q.); (Z.Z.); (J.Z.); (W.Z.); (D.W.); (A.F.); (S.Y.)
| | - Dongjiao Wang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (S.Z.); (L.Q.); (Z.Z.); (J.Z.); (W.Z.); (D.W.); (A.F.); (S.Y.)
| | - Aoyin Feng
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (S.Z.); (L.Q.); (Z.Z.); (J.Z.); (W.Z.); (D.W.); (A.F.); (S.Y.)
| | - Shaolin Yang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (S.Z.); (L.Q.); (Z.Z.); (J.Z.); (W.Z.); (D.W.); (A.F.); (S.Y.)
- Yunnan Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Kaiyuan 661600, China
| | - Youxiong Que
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (S.Z.); (L.Q.); (Z.Z.); (J.Z.); (W.Z.); (D.W.); (A.F.); (S.Y.)
- Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Correspondence: (Y.Q.); (Y.S.); Tel.: +86-591-8385-2547 (Y.Q. & Y.S.)
| | - Yachun Su
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (S.Z.); (L.Q.); (Z.Z.); (J.Z.); (W.Z.); (D.W.); (A.F.); (S.Y.)
- Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Correspondence: (Y.Q.); (Y.S.); Tel.: +86-591-8385-2547 (Y.Q. & Y.S.)
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Zhang C, Wang X, Li H, Wang J, Zeng Q, Huang W, Huang H, Xie Y, Yu S, Kan Q, Wang Q, Cheng Y. GLRaV-2 protein p24 suppresses host defenses by interaction with a RAV transcription factor from grapevine. PLANT PHYSIOLOGY 2022; 189:1848-1865. [PMID: 35485966 PMCID: PMC9237672 DOI: 10.1093/plphys/kiac181] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 03/24/2022] [Indexed: 05/27/2023]
Abstract
Grapevine leafroll-associated virus 2 (GLRaV-2) is a prevalent virus associated with grapevine leafroll disease, but the molecular mechanism underlying GLRaV-2 infection is largely unclear. Here, we report that 24-kDa protein (p24), an RNA-silencing suppressor (RSS) encoded by GLRaV-2, promotes GLRaV-2 accumulation via interaction with the B3 DNA-binding domain of grapevine (Vitis vinifera) RELATED TO ABSCISIC ACID INSENSITIVE3/VIVIPAROUS1 (VvRAV1), a transcription factor belonging to the APETALA2/ETHYLENE RESPONSE FACTOR (AP2/ERF) superfamily. Salicylic acid-inducible VvRAV1 positively regulates the grapevine pathogenesis-related protein 1 (VvPR1) gene by directly binding its promoter, indicating that VvRAV1 may function in the regulation of host basal defense responses. p24 hijacks VvRAV1 to the cytoplasm and employs the protein to sequester 21-nt double-stranded siRNA together, thereby enhancing its own RSS activity. Moreover, p24 enters the nucleus via interaction with VvRAV1 and weakens the latter's binding affinity to the VvPR1 promoter, leading to decreased expression of VvPR1. Our results provide a mechanism by which a viral RSS interferes with both the antiviral RNA silencing and the AP2/ERF-mediated defense responses via the targeting of one specific host factor.
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Affiliation(s)
| | - Xianyou Wang
- Department of Pomology/Lab of Stress Physiology and Molecular Biology for Tree Fruits, Key Lab of Beijing Municipality, China Agricultural University, Beijing 100193, China
| | - Hanwei Li
- Department of Pomology/Lab of Stress Physiology and Molecular Biology for Tree Fruits, Key Lab of Beijing Municipality, China Agricultural University, Beijing 100193, China
| | - Jinying Wang
- Department of Pomology/Lab of Stress Physiology and Molecular Biology for Tree Fruits, Key Lab of Beijing Municipality, China Agricultural University, Beijing 100193, China
| | - Qi Zeng
- Department of Pomology/Lab of Stress Physiology and Molecular Biology for Tree Fruits, Key Lab of Beijing Municipality, China Agricultural University, Beijing 100193, China
| | - Wenting Huang
- Department of Pomology/Lab of Stress Physiology and Molecular Biology for Tree Fruits, Key Lab of Beijing Municipality, China Agricultural University, Beijing 100193, China
| | - Haoqiang Huang
- Department of Pomology/Lab of Stress Physiology and Molecular Biology for Tree Fruits, Key Lab of Beijing Municipality, China Agricultural University, Beijing 100193, China
| | - Yinshuai Xie
- Department of Pomology/Lab of Stress Physiology and Molecular Biology for Tree Fruits, Key Lab of Beijing Municipality, China Agricultural University, Beijing 100193, China
| | - Shangzhen Yu
- Department of Pomology/Lab of Stress Physiology and Molecular Biology for Tree Fruits, Key Lab of Beijing Municipality, China Agricultural University, Beijing 100193, China
| | - Qing Kan
- Department of Pomology/Lab of Stress Physiology and Molecular Biology for Tree Fruits, Key Lab of Beijing Municipality, China Agricultural University, Beijing 100193, China
| | - Qi Wang
- Department of Plant Pathology, China Agricultural University, Beijing 100193, China
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Ibanez F, Suh JH, Wang Y, Rivera M, Setamou M, Stelinski LL. Salicylic acid mediated immune response of Citrus sinensis to varying frequencies of herbivory and pathogen inoculation. BMC PLANT BIOLOGY 2022; 22:7. [PMID: 34979915 PMCID: PMC8722004 DOI: 10.1186/s12870-021-03389-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 12/08/2021] [Indexed: 05/07/2023]
Abstract
BACKGROUND Plant immunity against pathogens and pests is comprised of complex mechanisms orchestrated by signaling pathways regulated by plant hormones [Salicylic acid (SA) and Jasmonic acid (JA)]. Investigations of plant immune response to phytopathogens and phloem-feeders have revealed that SA plays a critical role in reprogramming of the activity and/or localization of transcriptional regulators via post-translational modifications. We explored the contributing effects of herbivory by a phytopathogen vector [Asian citrus psyllid, Diaphorina citri] and pathogen [Candidatus Liberibacter asiaticus (CaLas)] infection on response of sweet orange [Citrus sinensis (L.) Osbeck] using manipulative treatments designed to mimic the types of infestations/infections that citrus growers experience when cultivating citrus in the face of Huanglongbing (HLB) disease. RESULTS A one-time (7 days) inoculation access period with CaLas-infected vectors caused SA-associated upregulation of PR-1, stimulating defense response after a long period of infection without herbivory (270 and 360 days). In contrast, while repeated (monthly) 'pulses' of 7 day feeding injury by psyllids stimulated immunity in CaLas-infected citrus by increasing SA in leaves initially (up to 120 days), long-term (270 and 360 days) repeated herbivory caused SA to decrease coincident with upregulation of genes associated with SA metabolism (BMST and DMR6). Similarly, transcriptional responses and metabolite (SA and its analytes) accumulation in citrus leaves exposed to a continuously reproducing population of D. citri exhibited a transitory upregulation of genes associated with SA signaling at 120 days and a posterior downregulation after long-term psyllid (adults and nymphs) feeding (270 and 360 days). CONCLUSIONS Herbivory played an important role in regulation of SA accumulation in mature leaves of C. sinensis, whether or not those trees were coincidentally infected with CaLas. Our results indicate that prevention of feeding injury inflicted by D. citri from the tritrophic interaction may allow citrus plants to better cope with the consequences of CaLas infection, highlighting the importance of vector suppression as a component of managing this cosmopolitan disease.
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Affiliation(s)
- Freddy Ibanez
- Department of Entomology and Nematology, Citrus Research and Education Center, University of Florida, Lake Alfred, Florida, 33850 USA
- Present address: Texas A&M University-AgriLife Research, 2415 E Highway 83 –, Weslaco, TX 78596 USA
| | - Joon Hyuk Suh
- Department of Food Science and Human Nutrition, Citrus Research and Education Center, University of Florida, Lake Alfred, Florida, 33850 USA
| | - Yu Wang
- Department of Food Science and Human Nutrition, Citrus Research and Education Center, University of Florida, Lake Alfred, Florida, 33850 USA
| | - Monique Rivera
- Department of Entomology, University of California Riverside, Riverside, California, 92521 USA
| | - Mamoudou Setamou
- Texas A&M University-Kingsville Citrus Center, 312 N International Blvd, Weslaco, TX 78599 USA
| | - Lukasz L. Stelinski
- Department of Entomology and Nematology, Citrus Research and Education Center, University of Florida, Lake Alfred, Florida, 33850 USA
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Xu X, Chen Y, Li B, Zhang Z, Qin G, Chen T, Tian S. Molecular mechanisms underlying multi-level defense responses of horticultural crops to fungal pathogens. HORTICULTURE RESEARCH 2022; 9:uhac066. [PMID: 35591926 PMCID: PMC9113409 DOI: 10.1093/hr/uhac066] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 03/07/2022] [Indexed: 05/21/2023]
Abstract
The horticultural industry helps to enrich and improve the human diet while contributing to growth of the agricultural economy. However, fungal diseases of horticultural crops frequently occur during pre- and postharvest periods, reducing yields and crop quality and causing huge economic losses and wasted food. Outcomes of fungal diseases depend on both horticultural plant defense responses and fungal pathogenicity. Plant defense responses are highly sophisticated and are generally divided into preformed and induced defense responses. Preformed defense responses include both physical barriers and phytochemicals, which are the first line of protection. Induced defense responses, which include innate immunity (pattern-triggered immunity and effector-triggered immunity), local defense responses, and systemic defense signaling, are triggered to counterstrike fungal pathogens. Therefore, to develop regulatory strategies for horticultural plant resistance, a comprehensive understanding of defense responses and their underlying mechanisms is critical. Recently, integrated multi-omics analyses, CRISPR-Cas9-based gene editing, high-throughput sequencing, and data mining have greatly contributed to identification and functional determination of novel phytochemicals, regulatory factors, and signaling molecules and their signaling pathways in plant resistance. In this review, research progress on defense responses of horticultural crops to fungal pathogens and novel regulatory strategies to regulate induction of plant resistance are summarized, and then the problems, challenges, and future research directions are examined.
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Affiliation(s)
- Xiaodi Xu
- Key Laboratory of Plant Resources, Institute of Botany, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100093, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yong Chen
- Key Laboratory of Plant Resources, Institute of Botany, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100093, China
| | - Boqiang Li
- Key Laboratory of Plant Resources, Institute of Botany, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100093, China
| | - Zhanquan Zhang
- Key Laboratory of Plant Resources, Institute of Botany, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100093, China
| | - Guozheng Qin
- Key Laboratory of Plant Resources, Institute of Botany, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100093, China
| | - Tong Chen
- Key Laboratory of Plant Resources, Institute of Botany, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100093, China
- Corresponding authors. E-mail: ;
| | - Shiping Tian
- Key Laboratory of Plant Resources, Institute of Botany, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100093, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- Corresponding authors. E-mail: ;
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9
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Ntui VO, Uyoh EA, Ita EE, Markson AA, Tripathi JN, Okon NI, Akpan MO, Phillip JO, Brisibe EA, Ene‐Obong EE, Tripathi L. Strategies to combat the problem of yam anthracnose disease: Status and prospects. MOLECULAR PLANT PATHOLOGY 2021; 22:1302-1314. [PMID: 34275185 PMCID: PMC8435233 DOI: 10.1111/mpp.13107] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 06/19/2021] [Accepted: 06/21/2021] [Indexed: 05/05/2023]
Abstract
Yam (Dioscorea spp.) anthracnose, caused by Colletotrichum alatae, is the most devastating fungal disease of yam in West Africa, leading to 50%-90% of tuber yield losses in severe cases. In some instances, plants die without producing any tubers or each shoot may produce several small tubers before it dies if the disease strikes early. C. alatae affects all parts of the yam plant at all stages of development, including leaves, stems, tubers, and seeds of yams, and it is highly prevalent in the yam belt region and other yam-producing countries in the world. Traditional methods adopted by farmers to control the disease have not been very successful. Fungicides have also failed to provide long-lasting control. Although conventional breeding and genomics-assisted breeding have been used to develop some level of resistance to anthracnose in Dioscorea alata, the appearance of new and more virulent strains makes the development of improved varieties with broad-spectrum and durable resistance critical. These shortcomings, coupled with interspecific incompatibility, dioecy, polyploidy, poor flowering, and the long breeding cycle of the crop, have prompted researchers to explore biotechnological techniques to complement conventional breeding to speed up crop improvement. Modern biotechnological tools have the potential of producing fungus-resistant cultivars, thereby bypassing the natural bottlenecks of traditional breeding. This article reviews the existing biotechnological strategies and proposes several approaches that could be adopted to develop anthracnose-resistant yam varieties for improved food security in West Africa.
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Affiliation(s)
- Valentine Otang Ntui
- Department of Genetics and BiotechnologyUniversity of CalabarCalabarNigeria
- International Institute of Tropical AgricultureNairobiKenya
| | - Edak Aniedi Uyoh
- Department of Genetics and BiotechnologyUniversity of CalabarCalabarNigeria
| | - Effiom Eyo Ita
- Department of Genetics and BiotechnologyUniversity of CalabarCalabarNigeria
| | | | | | - Nkese Ime Okon
- Department of Genetics and BiotechnologyUniversity of CalabarCalabarNigeria
| | - Mfon Okon Akpan
- Department of Genetics and BiotechnologyUniversity of CalabarCalabarNigeria
| | | | | | | | - Leena Tripathi
- International Institute of Tropical AgricultureNairobiKenya
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10
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Kattupalli D, Srinivasan A, Soniya EV. A Genome-Wide Analysis of Pathogenesis-Related Protein-1 ( PR-1) Genes from Piper nigrum Reveals Its Critical Role during Phytophthora capsici Infection. Genes (Basel) 2021; 12:1007. [PMID: 34208836 PMCID: PMC8303604 DOI: 10.3390/genes12071007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/10/2021] [Accepted: 06/16/2021] [Indexed: 11/25/2022] Open
Abstract
Black pepper (Piper nigrum L.) is a prominent spice that is an indispensable ingredient in cuisine and traditional medicine. Phytophthora capsici, the causative agent of footrot disease, causes a drastic constraint in P. nigrum cultivation and productivity. To counterattack various biotic and abiotic stresses, plants employ a broad array of mechanisms that includes the accumulation of pathogenesis-related (PR) proteins. Through a genome-wide survey, eleven PR-1 genes that belong to a CAP superfamily protein with a caveolin-binding motif (CBM) and a CAP-derived peptide (CAPE) were identified from P. nigrum. Despite the critical functional domains, PnPR-1 homologs differ in their signal peptide motifs and core amino acid composition in the functional protein domains. The conserved motifs of PnPR-1 proteins were identified using MEME. Most of the PnPR-1 proteins were basic in nature. Secondary and 3D structure analyses of the PnPR-1 proteins were also predicted, which may be linked to a functional role in P. nigrum. The GO and KEGG functional annotations predicted their function in the defense responses of plant-pathogen interactions. Furthermore, a transcriptome-assisted FPKM analysis revealed PnPR-1 genes mapped to the P. nigrum-P. capsici interaction pathway. An altered expression pattern was detected for PnPR-1 transcripts among which a significant upregulation was noted for basic PnPR-1 genes such as CL10113.C1 and Unigene17664. The drastic variation in the transcript levels of CL10113.C1 was further validated through qRT-PCR and it showed a significant upregulation in infected leaf samples compared with the control. A subsequent analysis revealed the structural details, phylogenetic relationships, conserved sequence motifs and critical cis-regulatory elements of PnPR-1 genes. This is the first genome-wide study that identified the role of PR-1 genes during P. nigrum-P. capsici interactions. The detailed in silico experimental analysis revealed the vital role of PnPR-1 genes in regulating the first layer of defense towards a P. capsici infection in Panniyur-1 plants.
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Affiliation(s)
| | | | - Eppurath Vasudevan Soniya
- Transdisciplinary Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram 695014, Kerala, India; (D.K.); (A.S.)
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11
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Li R, Wang L, Li Y, Zhao R, Zhang Y, Sheng J, Ma P, Shen L. Knockout of SlNPR1 enhances tomato plants resistance against Botrytis cinerea by modulating ROS homeostasis and JA/ET signaling pathways. PHYSIOLOGIA PLANTARUM 2020; 170:569-579. [PMID: 32840878 DOI: 10.1111/ppl.13194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/21/2020] [Accepted: 08/18/2020] [Indexed: 06/11/2023]
Abstract
Tomato is one of the most popular horticultural crops, and many commercial tomato cultivars are particularly susceptible to Botrytis cinerea. Non-expressor of pathogenesis-related gene 1 (NPR1) is a critical component of the plant defense mechanisms. However, our understanding of how SlNPR1 influences disease resistance in tomato is still limited. In this study, two independent slnpr1 mutants were used to study the role of SlNPR1 in tomato resistance against B. cinerea. Compared to (WT), slnpr1 leaves exhibited enhanced resistance against B. cinerea with smaller lesion sizes, higher activities of chitinase (CHI), β-1, 3-glucanases (GLU) and phenylalanine ammonia-lyase (PAL), and significantly increased expressions of pathogenesis-related genes (PRs). The increased activities of peroxidase (POD), ascorbate peroxidase (APX) and decreased catalase (CAT) activities collectively regulated reactive oxygen species (ROS) homeostasis in slnpr1 mutants. The integrity of the cell wall in slnpr1 mutants was maintained. Moreover, the enhanced resistance was further reflected by induction of defense genes involved in jasmonic acid (JA) and ethylene (ET) signaling pathways. Taken together, these findings revealed that knocking out SlNPR1 resulted in increased activities of defense enzymes, changes in ROS homeostasis and integrity of cell walls, and activation of JA and ET pathways, which confers resistance against B. cinerea in tomato plants.
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Affiliation(s)
- Rui Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
- Department of Botany, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Liu Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Yujing Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Ruirui Zhao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Yuelin Zhang
- Department of Botany, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Jiping Sheng
- School of Agricultural Economics and Rural Development, Renmin University of China, Beijing, 100872, China
| | - Peihua Ma
- Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland, College Park, Maryland, 20740, USA
| | - Lin Shen
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China
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12
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Wang X, Zhang H, Nyamesorto B, Luo Y, Mu X, Wang F, Kang Z, Lagudah E, Huang L. A new mode of NPR1 action via an NB-ARC-NPR1 fusion protein negatively regulates the defence response in wheat to stem rust pathogen. THE NEW PHYTOLOGIST 2020; 228:959-972. [PMID: 32544264 PMCID: PMC7589253 DOI: 10.1111/nph.16748] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 06/01/2020] [Indexed: 05/20/2023]
Abstract
NPR1 has been found to be a key transcriptional regulator in some plant defence responses. There are nine NPR1 homologues (TaNPR1) in wheat, but little research has been done to understand the function of those NPR1-like genes in the wheat defence response against stem rust (Puccinia graminis f. sp. tritici) pathogens. We used bioinformatics and reverse genetics approaches to study the expression and function of each TaNPR1. We found six members of TaNPR1 located on homoeologous group 3 chromosomes (designated as TaG3NPR1) and three on homoeologous group 7 chromosomes (designated as TaG7NPR1). The group 3 NPR1 proteins regulate transcription of SA-responsive PR genes. Downregulation of all the TaNPR1 homologues via virus-induced gene co-silencing resulted in enhanced resistance to stem rust. More specifically downregulating TaG7NPR1 homeologues or Ta7ANPR1 expression resulted in stem rust resistance phenotype. By contrast, knocking down TaG3NPR1 alone did not show visible phenotypic changes in response to the rust pathogen. Knocking out Ta7ANPR1 enhanced resistance to stem rust. The Ta7ANPR1 locus is alternatively spliced under pathogen inoculated conditions. We discovered a new mode of NPR1 action in wheat at the Ta7ANPR1 locus through an NB-ARC-NPR1 fusion protein negatively regulating the defence to stem rust infection.
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Affiliation(s)
- Xiaojing Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life SciencesNorthwest A&F UniversityYanglingShaanxi712100China
- Department of Plant Sciences and Plant PathologyMontana State UniversityBozemanMT59717‐3150USA
| | - Hongtao Zhang
- Department of Plant Sciences and Plant PathologyMontana State UniversityBozemanMT59717‐3150USA
| | - Bernard Nyamesorto
- Department of Plant Sciences and Plant PathologyMontana State UniversityBozemanMT59717‐3150USA
| | - Yi Luo
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life SciencesNorthwest A&F UniversityYanglingShaanxi712100China
| | - Xiaoqian Mu
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life SciencesNorthwest A&F UniversityYanglingShaanxi712100China
| | - Fangyan Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life SciencesNorthwest A&F UniversityYanglingShaanxi712100China
| | - Zhensheng Kang
- State Key Laboratory of Crop Stress Biology for Arid AreasCollege of Plant ProtectionNorthwest A&F UniversityYanglingShaanxi712100China
| | - Evans Lagudah
- CSIRO Agriculture & FoodGPO Box 1700CanberraACT2601Australia
| | - Li Huang
- Department of Plant Sciences and Plant PathologyMontana State UniversityBozemanMT59717‐3150USA
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13
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Sun LM, Fang JB, Zhang M, Qi XJ, Lin MM, Chen JY. Molecular Cloning and Functional Analysis of the NPR1 Homolog in Kiwifruit ( Actinidia eriantha). FRONTIERS IN PLANT SCIENCE 2020; 11:551201. [PMID: 33042179 PMCID: PMC7524898 DOI: 10.3389/fpls.2020.551201] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Accepted: 09/01/2020] [Indexed: 05/23/2023]
Abstract
Kiwifruit bacterial canker, caused by the bacterial pathogen Pseudomonas syringae pv. actinidiae (Psa), is a destructive disease in the kiwifruit industry globally. Consequently, understanding the mechanism of defense against pathogens in kiwifruit could facilitate the development of effective novel protection strategies. The Non-expressor of Pathogenesis-Related genes 1 (NPR1) is a critical component of the salicylic acid (SA)-dependent signaling pathway. Here, a novel kiwifruit NPR1-like gene, designated AeNPR1a, was isolated by using PCR and rapid amplification of cDNA ends techniques. The full-length cDNA consisted of 1952 base pairs with a 1,746-bp open-reading frame encoding a 582 amino acid protein. Homology analysis showed that the AeNPR1a protein is significantly similar to the VvNPR1 of grape. A 2.0 Kb 5'-flanking region of AeNPR1a was isolated, and sequence identification revealed the presence of several putative cis-regulatory elements, including basic elements, defense and stress response elements, and binding sites for WRKY transcription factors. Real-time quantitative PCR results demonstrated that AeNPR1a had different expression patterns in various tissues, and its transcription could be induced by phytohormone treatment and Psa inoculation. The yeast two-hybrid assay revealed that AeNPR1a interacts with AeTGA2. Constitutive expression of AeNPR1a induced the expression of pathogenesis-related gene in transgenic tobacco plants and enhanced tolerance to bacterial pathogens. In addition, AeNPR1a expression could restore basal resistance to Pseudomonas syringae pv. tomato DC3000 (Pst) in Arabidopsis npr1-1 mutant. Our data suggest that AeNPR1a gene is likely to play a pivotal role in defense responses in kiwifruit.
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Biotechnological Approaches: Gene Overexpression, Gene Silencing, and Genome Editing to Control Fungal and Oomycete Diseases in Grapevine. Int J Mol Sci 2020; 21:ijms21165701. [PMID: 32784854 PMCID: PMC7460970 DOI: 10.3390/ijms21165701] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/03/2020] [Accepted: 08/05/2020] [Indexed: 11/17/2022] Open
Abstract
Downy mildew, powdery mildew, and grey mold are some of the phytopathological diseases causing economic losses in agricultural crops, including grapevine, worldwide. In the current scenario of increasing global warming, in which the massive use of agrochemicals should be limited, the management of fungal disease has become a challenge. The knowledge acquired on candidate resistant (R) genes having an active role in plant defense mechanisms has allowed numerous breeding programs to integrate these traits into selected cultivars, even though with some limits in the conservation of the proper qualitative characteristics of the original clones. Given their gene-specific mode of action, biotechnological techniques come to the aid of breeders, allowing them to generate simple and fast modifications in the host, without introducing other undesired genes. The availability of efficient gene transfer procedures in grapevine genotypes provide valid tools that support the application of new breeding techniques (NBTs). The expertise built up over the years has allowed the optimization of these techniques to overexpress genes that directly or indirectly limit fungal and oomycetes pathogens growth or silence plant susceptibility genes. Furthermore, the downregulation of pathogen genes which act as virulence effectors by exploiting the RNA interference mechanism, represents another biotechnological tool that increases plant defense. In this review, we summarize the most recent biotechnological strategies optimized and applied on Vitis species, aimed at reducing their susceptibility to the most harmful fungal and oomycetes diseases. The best strategy for combating pathogenic organisms is to exploit a holistic approach that fully integrates all these available tools.
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15
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Wang K, Wu D, Guo D, Du M. β-aminobutyric acid induces disease resistance againstBotrytis cinereain grape berries by a cellular priming mechanism. ACTA ALIMENTARIA 2019. [DOI: 10.1556/066.2019.48.2.5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- K.T. Wang
- Chinese-Hungarian Cooperative Research Centre for Food Science, Southwest University, Chongqing 400715. P.R. China
- College of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing 404100. P.R. China
| | - D.Z. Wu
- College of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing 404100. P.R. China
| | - D.Q. Guo
- College of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing 404100. P.R. China
| | - M.Y. Du
- Chinese-Hungarian Cooperative Research Centre for Food Science, Southwest University, Chongqing 400715. P.R. China
- College of Food Science, Southwest University, Chongqing 400715. P.R. China
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16
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Eitle MW, Loacker J, Meng-Reiterer J, Schuhmacher R, Griesser M, Forneck A. Polyphenolic profiling of roots (Vitis spp.) under grape phylloxera (D. vitifoliae Fitch) attack. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 135:174-181. [PMID: 30553139 DOI: 10.1016/j.plaphy.2018.12.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 12/03/2018] [Accepted: 12/03/2018] [Indexed: 05/23/2023]
Abstract
Many plants respond to herbivore attacks by the formation of secondary metabolites, such as polyphenols. Grape phylloxera (Daktulosphaira vitifoliaeFitch) induces organoid root galls on fibrous root tips of tolerant Vitis spp. rootstocks. We aim to understand if and how secondary metabolites are involved in the compatible interaction of D. vitifoliae and tolerant Vitis ssp. rootstocks belowground. We hypothise that D. vitifoliae infestation triggers the accumulation of phenolic key compounds in root gall tissue without preventing the compatible host-parasite interaction on two tolerant rootstocks with different genetic background: Teleki 5C (V. berlandieri x V. riparia) and Fercal (B.C. n°1B x 31 Richter). Plants and insects are grown in isolated climate chambers to sample root tips of non-infested plants (control) as well as root tips and galls of D. vitifoliae infested plants (5-14 dai). HPLC-MS-based analyses of phenolic key compounds are compared with gene expression levels of the biosynthetic phenylpropanoid pathway analysing temporal sequences of D. vitifoliae infested root tissue. The results show that the induction of the phenylpropanoid pathway by D. vitifoliae infestation plays an important role in the plant response. Concentrations of phenolic key compounds vary significantly among the rootstocks tested. Both rootstocks display an accumulation of flavan-3-ols and stilbenes in infested root gall tissue. Comparing the host responses of the two rootstocks Fercal shows a stronger accumulation of stilbenes locally in infested root galls, whereas Teleki 5C indicates elevated amounts of stilbenes in non-infested root tip tissue.
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Affiliation(s)
- Markus W Eitle
- Division of Viticulture and Pomology, Department of Crop Sciences, University of Natural Resources and Life Sciences (BOKU), Vienna, Konrad Lorenz Str. 24, 3430, Tulln, Austria.
| | - Julia Loacker
- Division of Viticulture and Pomology, Department of Crop Sciences, University of Natural Resources and Life Sciences (BOKU), Vienna, Konrad Lorenz Str. 24, 3430, Tulln, Austria
| | - Jacqueline Meng-Reiterer
- Center for Analytical Chemistry, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences (BOKU), Vienna, Konrad-Lorenz-Straße 20, 3430, Tulln, Austria
| | - Rainer Schuhmacher
- Center for Analytical Chemistry, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences (BOKU), Vienna, Konrad-Lorenz-Straße 20, 3430, Tulln, Austria
| | - Michaela Griesser
- Division of Viticulture and Pomology, Department of Crop Sciences, University of Natural Resources and Life Sciences (BOKU), Vienna, Konrad Lorenz Str. 24, 3430, Tulln, Austria
| | - Astrid Forneck
- Division of Viticulture and Pomology, Department of Crop Sciences, University of Natural Resources and Life Sciences (BOKU), Vienna, Konrad Lorenz Str. 24, 3430, Tulln, Austria
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17
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Li R, Liu C, Zhao R, Wang L, Chen L, Yu W, Zhang S, Sheng J, Shen L. CRISPR/Cas9-Mediated SlNPR1 mutagenesis reduces tomato plant drought tolerance. BMC PLANT BIOLOGY 2019; 19:38. [PMID: 30669982 PMCID: PMC6341727 DOI: 10.1186/s12870-018-1627-4] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 12/28/2018] [Indexed: 05/18/2023]
Abstract
BACKGROUND NPR1, nonexpressor of pathogenesis-related gene 1, is a master regulator involved in plant defense response to pathogens, and its regulatory mechanism in the defense pathway has been relatively clear. However, information about the function of NPR1 in plant response to abiotic stress is still limited. Tomato is the fourth most economically crop worldwide and also one of the best-characterized model plants employed in genetic studies. Because of the lack of a stable tomato NPR1 (SlNPR1) mutant, little is known about the function of SlNPR1 in tomato response to biotic and abiotic stresses. RESULTS Here we isolated SlNPR1 from tomato 'Ailsa Craig' and generated slnpr1 mutants using the CRISPR/Cas9 system. Analysis of the cis-acting elements indicated that SlNPR1 might be involved in tomato plant response to drought stress. Expression pattern analysis showed that SlNPR1 was expressed in all plant tissues, and it was strongly induced by drought stress. Thus, we investigated the function of SlNPR1 in tomato-plant drought tolerance. Results showed that slnpr1 mutants exhibited reduced drought tolerance with increased stomatal aperture, higher electrolytic leakage, malondialdehyde (MDA) and hydrogen peroxide (H2O2) levels, and lower activity levels of antioxidant enzymes, compared to wild type (WT) plants. The reduced drought tolerance of slnpr1 mutants was further reflected by the down-regulated expression of drought related key genes, including SlGST, SlDHN, and SlDREB. CONCLUSIONS Collectively, the data suggest that SlNPR1 is involved in regulating tomato plant drought response. These results aid in further understanding the molecular basis underlying SlNPR1 mediation of tomato drought sensitivity.
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Affiliation(s)
- Rui Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083 China
| | - Chunxue Liu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083 China
| | - Ruirui Zhao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083 China
| | - Liu Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083 China
| | - Lin Chen
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083 China
| | - Wenqing Yu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083 China
| | - Shujuan Zhang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083 China
| | - Jiping Sheng
- School of Agricultural Economics and Rural Development, Renmin University of China, Beijing, 100872 China
| | - Lin Shen
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083 China
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18
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Sung YC, Lin CP, Hsu HJ, Chen YL, Chen JC. Silencing of CrNPR1 and CrNPR3 Alters Plant Susceptibility to Periwinkle Leaf Yellowing Phytoplasma. FRONTIERS IN PLANT SCIENCE 2019; 10:1183. [PMID: 31632422 PMCID: PMC6779864 DOI: 10.3389/fpls.2019.01183] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 08/29/2019] [Indexed: 05/22/2023]
Abstract
Phytoplasmas are prokaryotic plant pathogens that cause considerable loss in many economically important crops, and an increasing number of phytoplasma diseases are being reported on new hosts. Knowledge of plant defense mechanisms against such pathogens should help to improve strategies for controlling these diseases. Salicylic acid (SA)-mediated defense may play an important role in defense against phytoplasmas. Here, we report that SA accumulated in Madagascar periwinkle (Catharanthus roseus) infected with periwinkle leaf yellowing (PLY) phytoplasma. CrPR1a expression was induced in both symptomatic and non-symptomatic tissues of plants exhibiting PLY. NPR1 plays a central role in SA signaling, and two NPR1 homologs, CrNPR1 and CrNPR3, were identified from a periwinkle transcriptome database. Similar to CrPR1a, CrNPR1 expression was also induced in both symptomatic and non-symptomatic tissues of plants exhibiting PLY. Silencing of CrNPR1, but not CrNPR3, significantly repressed CrPR1a induction in Tobacco rattle virus-infected periwinkle plants. In addition, symptoms of PLY progressed fastest in CrNPR1-silenced plants and slowest in CrNPR3-silenced plants. Consistently, expression of CrNPR1, but not CrNPR3, was induced by phytoplasma infection as well as SA treatment. This study highlights the importance of NPR1- and SA-mediated defense against phytoplasma in periwinkle and offers insight into plant-phytoplasma interactions to improve disease control strategies.
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Affiliation(s)
- Yi-Chang Sung
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei, Taiwan
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
| | - Chan-Pin Lin
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei, Taiwan
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
| | - Hui-Ju Hsu
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
| | - Yu-Ling Chen
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei, Taiwan
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
| | - Jen-Chih Chen
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
- *Correspondence: Jen-Chih Chen,
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19
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Backer R, Naidoo S, van den Berg N. The NONEXPRESSOR OF PATHOGENESIS-RELATED GENES 1 (NPR1) and Related Family: Mechanistic Insights in Plant Disease Resistance. FRONTIERS IN PLANT SCIENCE 2019; 10:102. [PMID: 30815005 PMCID: PMC6381062 DOI: 10.3389/fpls.2019.00102] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 01/22/2019] [Indexed: 05/04/2023]
Abstract
The NONEXPRESSOR OF PATHOGENESIS-RELATED GENES 1 (NPR1) and related NPR1-like proteins are a functionally similar, yet surprisingly diverse family of transcription co-factors. Initially, NPR1 in Arabidopsis was identified as a positive regulator of systemic acquired resistance (SAR), paralogs NPR3 and NPR4 were later shown to be negative SAR regulators. The mechanisms involved have been the subject of extensive research and debate over the years, during which time a lot has been uncovered. The known roles of this protein family have extended to include influences over a broad range of systems including circadian rhythm, endoplasmic reticulum (ER) resident proteins and the development of lateral organs. Recently, important advances have been made in understanding the regulatory relationship between members of the NPR1-like protein family, providing new insight regarding their interactions, both with each other and other defense-related proteins. Most importantly the influence of salicylic acid (SA) on these interactions has become clearer with NPR1, NPR3, and NPR4 being considered bone fide SA receptors. Additionally, post-translational modification of NPR1 has garnered attention during the past years, adding to the growing regulatory complexity of this protein. Furthermore, growing interest in NPR1 overexpressing crops has provided new insights regarding the role of NPR1 in both biotic and abiotic stresses in several plant species. Given the wealth of information, this review aims to highlight and consolidate the most relevant and influential research in the field to date. In so doing, we attempt to provide insight into the mechanisms and interactions which underly the roles of the NPR1-like proteins in plant disease responses.
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Affiliation(s)
- Robert Backer
- Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
- Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria, South Africa
| | - Sanushka Naidoo
- Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
- Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria, South Africa
| | - Noëlani van den Berg
- Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
- Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria, South Africa
- *Correspondence: Noëlani van den Berg,
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Silva KJP, Mahna N, Mou Z, Folta KM. NPR1 as a transgenic crop protection strategy in horticultural species. HORTICULTURE RESEARCH 2018; 5:15. [PMID: 29581883 PMCID: PMC5862871 DOI: 10.1038/s41438-018-0026-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 01/19/2018] [Accepted: 01/25/2018] [Indexed: 05/08/2023]
Abstract
The NPR1 (NONEXPRESSOR OF PATHOGENESIS RELATED GENES1) gene has a central role in the long-lasting, broad-spectrum defense response known as systemic acquired resistance (SAR). When overexpressed in a transgenic context in Arabidopsis thaliana, this gene enhances resistance to a number of biotic and abiotic stresses. Its position as a key regulator of defense across diverse plant species makes NPR1 a strong candidate gene for genetic engineering disease and stress tolerance into other crops. High-value horticultural crops face many new challenges from pests and pathogens, and their emergence exceeds the pace of traditional breeding, making the application of NPR1-based strategies potentially useful in fruit and vegetable crops. However, plants overexpressing NPR1 occasionally present detrimental morphological traits that make its application less attractive. The practical utility of NPR-based approaches will be a balance of resistance gains versus other losses. In this review, we summarize the progress on the understanding of NPR1-centered applications in horticultural and other crop plants. We also discuss the effect of the ectopic expression of the A. thaliana NPR1 gene and its orthologs in crop plants and outline the future challenges of using NPR1 in agricultural applications.
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Affiliation(s)
| | - Nasser Mahna
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611 USA
- Department of Horticultural Sciences, University of Tabriz, Tabriz, Iran
| | - Zhonglin Mou
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32611 USA
- Graduate Program in Plant Molecular and Cellular Biology, University of Florida, Gainesville, FL 32611 USA
| | - Kevin M. Folta
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611 USA
- Graduate Program in Plant Molecular and Cellular Biology, University of Florida, Gainesville, FL 32611 USA
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21
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Silva KJP, Brunings AM, Pereira JA, Peres NA, Folta KM, Mou Z. The Arabidopsis ELP3/ELO3 and ELP4/ELO1 genes enhance disease resistance in Fragaria vesca L. BMC PLANT BIOLOGY 2017; 17:230. [PMID: 29191170 PMCID: PMC5709926 DOI: 10.1186/s12870-017-1173-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 11/13/2017] [Indexed: 05/22/2023]
Abstract
BACKGROUND Plant immune response is associated with a large-scale transcriptional reprogramming, which is regulated by numerous transcription regulators such as the Elongator complex. Elongator is a multitasking protein complex involved in diverse cellular processes, including histone modification, DNA methylation, and tRNA modification. In recent years, Elongator is emerging as a key regulator of plant immune responses. However, characterization of Elongator's function in plant immunity has been conducted only in the model plant Arabidopsis thaliana. It is thus unclear whether Elongator's role in plant immunity is conserved in higher plants. The objective of this study is to characterize transgenic woodland strawberry (Fragaria vesca L.) overexpressing the Arabidopsis Elongator (AtELP) genes, AtELP3 and AtELP4, and to determine whether F. vesca carries a functional Elongator complex. METHODS Transgenic F. vesca and Arabidopsis plants were produced via Agrobacterium-mediated genetic transformation and characterized by morphology, PCR, real-time quantitative PCR, and disease resistance test. The Student's t test was used to analyze the data. RESULTS Overexpression of AtELP3 and AtELP4 in F. vesca impacts plant growth and development and confers enhanced resistance to anthracnose crown rot, powdery mildew, and angular leaf spot, which are caused by the hemibiotrophic fungal pathogen Colletotrichum gloeosporioides, the obligate biotrophic fungal pathogen Podosphaera aphanis, and the hemibiotrophic bacterial pathogen Xanthomonas fragariae, respectively. Moreover, the F. vesca genome encodes all six Elongator subunits by single-copy genes with the exception of FvELP4, which is encoded by two homologous genes, FvELP4-1 and FvELP4-2. We show that FvELP4-1 complemented the Arabidopsis Atelp4/elo1-1 mutant, indicating that FvELP4 is biologically functional. CONCLUSIONS This is the first report on overexpression of Elongator genes in plants. Our results indicate that the function of Elongator in plant immunity is most likely conserved in F. vesca and suggest that Elongator genes may hold potential for helping mitigate disease severity and reduce the use of fungicides in strawberry industry.
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Affiliation(s)
- Katchen Julliany P. Silva
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32611 USA
- Department of Horticultural Sciences, University of Florida, Gainesville, FL 32611 USA
| | - Asha M. Brunings
- Department of Horticultural Sciences, University of Florida, Gainesville, FL 32611 USA
| | - Juliana A. Pereira
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32611 USA
- Department of Plant Pathology, University of Florida, Gainesville, FL 32611 USA
| | - Natalia A. Peres
- Department of Plant Pathology, Gulf Coast Research and Education Center, University of Florida, Wimauma, FL 33598 USA
| | - Kevin M. Folta
- Department of Horticultural Sciences, University of Florida, Gainesville, FL 32611 USA
| | - Zhonglin Mou
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32611 USA
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Ali S, Mir ZA, Tyagi A, Mehari H, Meena RP, Bhat JA, Yadav P, Papalou P, Rawat S, Grover A. Overexpression of NPR1 in Brassica juncea Confers Broad Spectrum Resistance to Fungal Pathogens. FRONTIERS IN PLANT SCIENCE 2017; 8:1693. [PMID: 29046679 PMCID: PMC5632730 DOI: 10.3389/fpls.2017.01693] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Accepted: 09/14/2017] [Indexed: 05/18/2023]
Abstract
Brassica juncea (Indian mustard) is a commercially important oil seed crop, which is highly affected by many biotic stresses. Among them, Alternaria leaf blight and powdery mildew are the most devastating diseases leading to huge yield losses in B. juncea around the world. In this regard, genetic engineering is a promising tool that may possibly allow us to enhance the B. juncea disease resistance against these pathogens. NPR1 (non-expressor of pathogen-related gene 1) is a bonafide receptor of salicylic acid (SA) which modulates multiple immune responses in plants especially activation of induced and systemic acquired resistance (SAR). Here, we report the isolation and characterization of new NPR1 homolog (BjNPR1) from B. juncea. The phylogenetic tree constructed based on the deduced sequence of BjNPR1 with homologs from other species revealed that BjNPR1 grouped together with other known NPR1 proteins of Cruciferae family, and was nearest to B. napus. Furthermore, expression analysis showed that BjNPR1 was upregulated after SA treatment and fungal infection but not by jasmonic acid or abscisic acid. To understand the defensive role of this gene, we generated B. juncea transgenic lines overexpressing BjNPR1, and further confirmed by PCR and Southern blotting. The transgenic lines showed no phenotypic abnormalities, and constitutive expression of BjNPR1 activates defense signaling pathways by priming the expression of antifungal PR genes. Moreover, BjNPR1 transgenic lines showed enhanced resistance to Alternaria brassicae and Erysiphe cruciferarum as there was delay in symptoms and reduced disease severity than non-transgenic plants. In addition, the rate of disease spreading to uninfected or distal parts was also delayed in transgenic plants thus suggesting the activation of SAR. Altogether, the present study suggests that BjNPR1 is involved in broad spectrum of disease resistance against fungal pathogens.
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Affiliation(s)
- Sajad Ali
- National Research Centre on Plant Biotechnology, New Delhi, India
- Centre of Research for Development, University of Kashmir, Srinagar, India
| | - Zahoor A. Mir
- National Research Centre on Plant Biotechnology, New Delhi, India
| | - Anshika Tyagi
- National Research Centre on Plant Biotechnology, New Delhi, India
| | - Hailay Mehari
- National Research Centre on Plant Biotechnology, New Delhi, India
| | | | - Javaid A. Bhat
- Division of Genetics, Indian Agricultural Research Institute, New Delhi, India
| | - Prashant Yadav
- National Research Centre on Plant Biotechnology, New Delhi, India
| | | | - Sandhya Rawat
- National Research Centre on Plant Biotechnology, New Delhi, India
| | - Anita Grover
- National Research Centre on Plant Biotechnology, New Delhi, India
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Wang L, Guo Z, Zhang Y, Wang Y, Yang G, Yang L, Wang L, Wang R, Xie Z. Overexpression of LhSorNPR1, a NPR1-like gene from the oriental hybrid lily 'Sorbonne', conferred enhanced resistance to Pseudomonas syringae pv. tomato DC3000 in Arabidopsis. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2017; 23:793-808. [PMID: 29158629 PMCID: PMC5671448 DOI: 10.1007/s12298-017-0466-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 05/30/2017] [Accepted: 08/29/2017] [Indexed: 05/03/2023]
Abstract
The non-expressor of the pathogenesis-related genes 1 (NPR1) is a master regulator in defense signaling of plants and plays a key role in basal and systemic acquired resistance. In this study, we isolated a NPR1-like gene from the oriental hybrid lily 'Sorbonne' (designated as LhSorNPR1) using rapid amplification of cDNA ends (RACE). The open reading frame of LhSorNPR1 consisted of 1854 bp, encoding a protein of 617 amino acids. Multiple sequence alignment revealed that LhSorNPR1 shares high similarity to NPR1-like proteins and characteristics of the BTB/POZ domain and ankyrin repeats. A comparison between the intron/exon organization of LhSorNPR1 and orthologs from other plant species demonstrated that NPR1 genomic fragments (including LhSorNPR1) are all composed of 4 exons and 3 introns. We also identified sequence motifs involved in hormone response and binding sites for RAV1 proteins and WRKY transcription factors through the prediction of cis-regulatory elements in the LhSorNPR1 promoter. Our gene expression analysis showed that LhSorNPR1 transcript levels significantly differed in various tissues, and that LhSorNPR1 expressions were induced by sodium salicylate, ethephon, and methyl jasmonate. Furthermore, we transformed LhSorNPR1 into Col-0 wild-type Arabidopsis to conduct function analysis, and we observed enhanced resistance to the bacterial pathogen Pseudomonas syringae pv. tomato DC3000 in the Arabidopsis expressing LhSorNPR1 gene. The enhanced disease resistance of LhSorNPR1 expressing plants could correlate to elevated expression levels in pathogenesis-related genes (PR1, PR2, and PR5) in vivo.
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Affiliation(s)
- Le Wang
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Zhihong Guo
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000 China
| | - Yubao Zhang
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000 China
| | - Yajun Wang
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000 China
| | - Guo Yang
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000 China
| | - Liu Yang
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Li Wang
- Forest Tree Seedling Station of Alashan League, Alashan League, 750300 China
| | - Ruoyu Wang
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000 China
| | - Zhongkui Xie
- Gaolan Station of Agricultural and Ecological Experiment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000 China
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Parmar N, Singh KH, Sharma D, Singh L, Kumar P, Nanjundan J, Khan YJ, Chauhan DK, Thakur AK. Genetic engineering strategies for biotic and abiotic stress tolerance and quality enhancement in horticultural crops: a comprehensive review. 3 Biotech 2017; 7:239. [PMID: 28702937 PMCID: PMC5507805 DOI: 10.1007/s13205-017-0870-y] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 07/02/2017] [Indexed: 11/28/2022] Open
Abstract
Genetic engineering technique offers myriads of applications in improvement of horticultural crops for biotic and abiotic stress tolerance, and produce quality enhancement. During last two decades, a large number of transgenic horticultural crops has been developed and more are underway. A number of genes including natural and synthetic Cry genes, protease inhibitors, trypsin inhibitors and cystatin genes have been used to incorporate insect and nematode resistance. For providing protection against fungal and bacterial diseases, various genes like chitinase, glucanase, osmotin, defensin and pathogenesis-related genes are being transferred to many horticultural crops world over. RNAi technique has been found quite successful in inducing virus resistance in horticultural crops in addition to coat protein genes. Abiotic stresses such as drought, heat and salinity adversely affect production and productivity of horticultural crops and a number of genes encoding for biosynthesis of stress protecting compounds including mannitol, glycine betaine and heat shock proteins have been employed for abiotic stress tolerance besides various transcription factors like DREB1, MAPK, WRKY, etc. Antisense gene and RNAi technologies have revolutionized the pace of improvement of horticultural crops, particularly ornamentals for color modification, increasing shelf-life and reducing post-harvest losses. Precise genome editing tools, particularly CRISPR/Cas9, have been efficiently applied in tomato, petunia, citrus, grape, potato and apple for gene mutation, repression, activation and epigenome editing. This review provides comprehensive overview to draw the attention of researchers for better understanding of genetic engineering advancements in imparting biotic and abiotic stress tolerance as well as on improving various traits related to quality, texture, plant architecture modification, increasing shelf-life, etc. in different horticultural crops.
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Affiliation(s)
- Nehanjali Parmar
- Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan, HP, 173 230, India.
| | | | - Deepika Sharma
- ICAR-Directorate of Rapeseed-Mustard Research, Bharatpur, Rajasthan, 321 303, India
| | - Lal Singh
- ICAR-Directorate of Rapeseed-Mustard Research, Bharatpur, Rajasthan, 321 303, India
| | - Pankaj Kumar
- National Institute of Plant Genome Research, New Delhi, 110 067, India
| | - J Nanjundan
- ICAR-Indian Agricultural Research Institute, Regional Station, Wellington, The Nilgiris, Tamilnadu, 643 231, India
| | - Yasin Jeshima Khan
- Division of Genomic Resources, ICAR-National Bureau of Plant Genetic Resources, PUSA Campus, New Delhi, 110 012, India
| | - Devendra Kumar Chauhan
- Division of Plant Breeding and Genetics, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Chatha, Jammu, J&K, 180 009, India
| | - Ajay Kumar Thakur
- ICAR-Directorate of Rapeseed-Mustard Research, Bharatpur, Rajasthan, 321 303, India
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25
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Massonnet M, Figueroa-Balderas R, Galarneau ERA, Miki S, Lawrence DP, Sun Q, Wallis CM, Baumgartner K, Cantu D. Neofusicoccum parvum Colonization of the Grapevine Woody Stem Triggers Asynchronous Host Responses at the Site of Infection and in the Leaves. FRONTIERS IN PLANT SCIENCE 2017; 8:1117. [PMID: 28702038 PMCID: PMC5487829 DOI: 10.3389/fpls.2017.01117] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 06/09/2017] [Indexed: 05/09/2023]
Abstract
Grapevine trunk diseases cause important economic losses in vineyards worldwide. Neofusicoccum parvum, one of the most aggressive causal agents of the trunk disease Botryosphaeria dieback, colonizes cells and tissues of the grapevine wood, leading to the formation of an internal canker. Symptoms then extend to distal shoots, with wilting of leaves and bud mortality. Our aim was to characterize the transcriptional dynamics of grapevine genes in the woody stem and in the leaves during Neofusicoccum parvum colonization. Genome-wide transcriptional profiling at seven distinct time points (0, 3, and 24 hours; 2, 6, 8, and 12 weeks) showed that both stems and leaves undergo extensive transcriptomic reprogramming in response to infection of the stem. While most intense transcriptional responses were detected in the stems at 24 hours, strong responses were not detected in the leaves until the next sampling point at 2 weeks post-inoculation. Network co-expression analysis identified modules of co-expressed genes common to both organs and showed most of these genes were asynchronously modulated. The temporal shift between stem vs. leaf responses affected transcriptional modulation of genes involved in both signal perception and transduction, as well as downstream biological processes, including oxidative stress, cell wall rearrangement and cell death. Promoter analysis of the genes asynchronously modulated in stem and leaves during N. parvum colonization suggests that the temporal shift of transcriptional reprogramming between the two organs might be due to asynchronous co-regulation by common transcriptional regulators. Topology analysis of stem and leaf co-expression networks pointed to specific transcription factor-encoding genes, including WRKY and MYB, which may be associated with the observed transcriptional responses in the two organs.
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Affiliation(s)
- Mélanie Massonnet
- Department of Viticulture and Enology, University of California, DavisDavis, CA, United States
| | - Rosa Figueroa-Balderas
- Department of Viticulture and Enology, University of California, DavisDavis, CA, United States
| | - Erin R. A. Galarneau
- Department of Plant Pathology, University of California, DavisDavis, CA, United States
| | - Shiho Miki
- Department of Viticulture and Enology, University of California, DavisDavis, CA, United States
- Department of Agriculture and Forest Science, Faculty of Life and Environmental Science, Shimane UniversityMatsue, Japan
| | - Daniel P. Lawrence
- Department of Plant Pathology, University of California, DavisDavis, CA, United States
| | - Qiang Sun
- Department of Biology, University of WisconsinStevens Point, WI, United States
| | - Christopher M. Wallis
- United States Department of Agriculture-Agricultural Research Service, San Joaquin Valley Agricultural Sciences CenterParlier, CA, United States
| | - Kendra Baumgartner
- United States Department of Agriculture-Agricultural Research Service, Crops Pathology and Genetics Research UnitDavis, CA, United States
| | - Dario Cantu
- Department of Viticulture and Enology, University of California, DavisDavis, CA, United States
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Nic-Matos G, Narváez M, Peraza-Echeverría S, Sáenz L, Oropeza C. Molecular cloning of two novel NPR1 homologue genes in coconut palm and analysis of their expression in response to the plant defense hormone salicylic acid. Genes Genomics 2017. [DOI: 10.1007/s13258-017-0566-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wang K, Liao Y, Xiong Q, Kan J, Cao S, Zheng Y. Induction of Direct or Priming Resistance against Botrytis cinerea in Strawberries by β-Aminobutyric Acid and Their Effects on Sucrose Metabolism. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:5855-65. [PMID: 27368357 DOI: 10.1021/acs.jafc.6b00947] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The specific forms of disease resistance induced by β-aminobutyric acid (BABA) and their impacts on sucrose metabolism of postharvest strawberries were determined in the present research. Treatment with 10-500 mmol L(-1) BABA inhibited the Botrytis cinerea infection, possibly directly by suppressing the fungus growth and indirectly by triggering disease resistance. Moreover, BABA-induced resistance against B. cinerea infection in strawberries was associated with either one of two mechanisms, depending upon the concentration used: BABA at concentrations higher than 100 mmol L(-1) directly induced the defense response, including a H2O2 burst, modulation of the expression of PR genes, including FaPR1, FaChi3, Faβglu, and FaPAL, and increased activities of chitinase, β-1,3-glucanase, and PAL, whereas BABA at 10 mmol L(-1) activated a priming response because the BABA-treated fruits exhibited an increased capacity to express molecular defense only when the fruits were inoculated with B. cinerea. Activation of the priming defense appeared almost as effective against B. cinerea as inducing direct defense. However, the primed strawberries maintained higher activities of SS synthesis and SPS and SPP enzymes) and lower level of SS cleavage during the incubation; these activities contributed to higher sucrose, fructose, and glucose contents, sweetness index, and sensory scores compared to fruits exhibiting the direct defense. Thus, it is plausible that the priming defense, which can be activated by BABA at relatively low concentrations, represents an optimal strategy for combining the advantages of enhanced disease protection and soluble sugar accumulation.
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Affiliation(s)
- Kaituo Wang
- College of Life Science and Engineering, Chongqing Three Gorges University , Chongqing 404000, People's Republic of China
- College of Food Science, Southwest University , Chongqing 400715, People's Republic of China
- College of Food Science and Technology, Nanjing Agricultural University , Nanjing, Jiangsu 210095, People's Republic of China
| | - Yunxia Liao
- College of Life Science and Engineering, Chongqing Three Gorges University , Chongqing 404000, People's Republic of China
| | - Qi Xiong
- College of Life Science and Engineering, Chongqing Three Gorges University , Chongqing 404000, People's Republic of China
| | - Jianquan Kan
- College of Food Science, Southwest University , Chongqing 400715, People's Republic of China
| | - Shifeng Cao
- Nanjing Research Institute for Agricultural Mechanization, Ministry of Agriculture , Nanjing, Jiangsu 210014, People's Republic of China
| | - Yonghua Zheng
- College of Food Science and Technology, Nanjing Agricultural University , Nanjing, Jiangsu 210095, People's Republic of China
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Guo R, Tu M, Wang X, Zhao J, Wan R, Li Z, Wang Y, Wang X. Ectopic expression of a grape aspartic protease gene, AP13, in Arabidopsis thaliana improves resistance to powdery mildew but increases susceptibility to Botrytis cinerea. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2016; 248:17-27. [PMID: 27181943 DOI: 10.1016/j.plantsci.2016.04.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Revised: 04/11/2016] [Accepted: 04/12/2016] [Indexed: 05/24/2023]
Abstract
The grape aspartic protease gene, AP13 was previously reported to be responsive, in Chinese wild Vitis quinquangularis cv. 'Shang-24', to infection by Erysiphe necator, the causal agent of powdery mildew disease, as well as to treatment with salicylic acid in V. labrusca×V. vinifera cv. 'Kyoho'. In the current study, we evaluated the expression levels of AP13 in 'Shang-24' in response to salicylic acid (SA), methyl jasmonate (MeJA) and ethylene (ET) treatments, as well as to infection by the necrotrophic fungus, Botrytis cinerea, and the transcript levels of VqAP13 decreased after B. cinerea infection and MeJA treatment, but increased following ET and SA treatments. Transgenic Arabidopsis thaliana lines over-expressing VqAP13 under the control of a constitutive promoter showed enhanced resistance to powdery mildew and to the bacterium Pseudomonas syringae pv. tomato DC3000, and accumulated more callose than wild type plants, while the resistance of transgenic A. thaliana lines to B. cinerea inoculation was reduced. In addition, the expression profiles of various disease resistance- related genes in the transgenic A. thaliana lines following infection by different pathogens were compared to the equivalent profiles in the wild type plants. The results suggest that VqAP13 action promotes the SA dependent signal transduction pathway, but suppresses the JA signal transduction pathway.
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Affiliation(s)
- Rongrong Guo
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; Guangxi Academy of Agricultures Sciences, Nanning, Guangxi 530007, China.
| | - Mingxing Tu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Xianhang Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Jiao Zhao
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Ran Wan
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Zhi Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Yuejin Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Xiping Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China.
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29
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Zhong X, Xi L, Lian Q, Luo X, Wu Z, Seng S, Yuan X, Yi M. The NPR1 homolog GhNPR1 plays an important role in the defense response of Gladiolus hybridus. PLANT CELL REPORTS 2015; 34:1063-74. [PMID: 25708873 DOI: 10.1007/s00299-015-1765-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 02/09/2015] [Accepted: 02/10/2015] [Indexed: 05/08/2023]
Abstract
GhNPR1 shares similar functions as Arabidopsis NPR1 . Silencing of GhNPR1 in Gladiolus results in an enhanced susceptibility to Curvularia gladioli. We propose that GhNPR1 plays important roles in plant immunity. Gladiolus plants and corms are susceptible to various types of pathogens including fungi, bacteria and viruses. Understanding the innate defense mechanism in Gladiolus is a prerequisite for the development of new protection strategies. The non-expressor of pathogenesis-related gene 1 (NPR1) and bzip transcription factor TGA2 play a key role in regulating salicylic acid (SA)-mediated systemic acquired resistance (SAR). In this study, the homologous genes, GhNPR1 and GhTGA2, were isolated from Gladiolus and functionally characterized. Expression of GhNPR1 exhibited a 3.8-fold increase in Gladiolus leaves following salicylic acid treatment. A 1332 bp fragment of the GhNPR1 promoter from Gladiolus hybridus was identified. Inducibility of the GhNPR1 promoter by SA was demonstrated using transient expression assays in the leaves of Nicotiana benthamiana. The GhNPR1 protein is located in the nucleus and cytomembrane. GhNPR1 interacts with GhTGA2, as observed using the bimolecular fluorescence complementation system. Overexpression of GhNPR1 in an Arabidopsis npr1 mutant can restore its basal resistance to Pseudomonas syringae pv. tomato DC3000. Silencing of GhNPR1, using a tobacco rattle virus-based silencing vector, resulted in an enhanced susceptibility to Curvularia gladioli. In conclusion, these results suggest that GhNPR1 plays a pivotal role in the SA-dependent systemic acquired resistance in Gladiolus.
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Affiliation(s)
- Xionghui Zhong
- Department of Ornamental Horticulture and Landscape Architecture, China Agricultural University, Yuan Mingyuan Western Road 2#, Beijing, 100193, China,
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Backer R, Mahomed W, Reeksting BJ, Engelbrecht J, Ibarra-Laclette E, van den Berg N. Phylogenetic and expression analysis of the NPR1-like gene family from Persea americana (Mill.). FRONTIERS IN PLANT SCIENCE 2015; 6:300. [PMID: 25972890 PMCID: PMC4413732 DOI: 10.3389/fpls.2015.00300] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 04/14/2015] [Indexed: 05/04/2023]
Abstract
The NONEXPRESSOR OF PATHOGENESIS-RELATED GENES1 (NPR1) forms an integral part of the salicylic acid (SA) pathway in plants and is involved in cross-talk between the SA and jasmonic acid/ethylene (JA/ET) pathways. Therefore, NPR1 is essential to the effective response of plants to pathogens. Avocado (Persea americana) is a commercially important crop worldwide. Significant losses in production result from Phytophthora root rot, caused by the hemibiotroph, Phytophthora cinnamomi. This oomycete infects the feeder roots of avocado trees leading to an overall decline in health and eventual death. The interaction between avocado and P. cinnamomi is poorly understood and as such limited control strategies exist. Thus uncovering the role of NPR1 in avocado could provide novel insights into the avocado - P. cinnamomi interaction. A total of five NPR1-like sequences were identified. These sequences were annotated using FGENESH and a maximum-likelihood tree was constructed using 34 NPR1-like protein sequences from other plant species. The conserved protein domains and functional motifs of these sequences were predicted. Reverse transcription quantitative PCR was used to analyze the expression of the five NPR1-like sequences in the roots of avocado after treatment with salicylic and jasmonic acid, P. cinnamomi infection, across different tissues and in P. cinnamomi infected tolerant and susceptible rootstocks. Of the five NPR1-like sequences three have strong support for a defensive role while two are most likely involved in development. Significant differences in the expression profiles of these five NPR1-like genes were observed, assisting in functional classification. Understanding the interaction of avocado and P. cinnamomi is essential to developing new control strategies. This work enables further classification of these genes by means of functional annotation and is a crucial step in understanding the role of NPR1 during P. cinnamomi infection.
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Affiliation(s)
- Robert Backer
- Forestry and Agricultural Biotechnology Institute, University of PretoriaPretoria, South Africa
- Department of Genetics, Fruit Tree Biotechnology Program, University of PretoriaPretoria, South Africa
| | - Waheed Mahomed
- Forestry and Agricultural Biotechnology Institute, University of PretoriaPretoria, South Africa
- Department of Genetics, Fruit Tree Biotechnology Program, University of PretoriaPretoria, South Africa
| | - Bianca J. Reeksting
- Forestry and Agricultural Biotechnology Institute, University of PretoriaPretoria, South Africa
- Department of Genetics, Fruit Tree Biotechnology Program, University of PretoriaPretoria, South Africa
| | - Juanita Engelbrecht
- Forestry and Agricultural Biotechnology Institute, University of PretoriaPretoria, South Africa
- Department of Genetics, Fruit Tree Biotechnology Program, University of PretoriaPretoria, South Africa
| | - Enrique Ibarra-Laclette
- Laboratorio Nacional de Genómica para la Biodiversidad-Langebio/Unidad de Genómica Avanzada, Centro de Investigación y Estudios Avanzados del – Instituto Politécnico NacionalIrapuato, México
- Red de Estudios Moleculares Avanzados, Instituto de Ecología A.C.,Xalapa, México
| | - Noëlani van den Berg
- Forestry and Agricultural Biotechnology Institute, University of PretoriaPretoria, South Africa
- Department of Genetics, Fruit Tree Biotechnology Program, University of PretoriaPretoria, South Africa
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Silva KJP, Brunings A, Peres NA, Mou Z, Folta KM. The Arabidopsis NPR1 gene confers broad-spectrum disease resistance in strawberry. Transgenic Res 2015; 24:693-704. [DOI: 10.1007/s11248-015-9869-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 03/19/2015] [Indexed: 11/25/2022]
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Response of direct or priming defense against Botrytis cinerea to methyl jasmonate treatment at different concentrations in grape berries. Int J Food Microbiol 2015; 194:32-9. [DOI: 10.1016/j.ijfoodmicro.2014.11.006] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Revised: 11/01/2014] [Accepted: 11/06/2014] [Indexed: 11/16/2022]
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Wu Q, Wang XZ, Tang YY, Yu HT, Ding YF, De Yang C, Cui FG, Zhang JC, Wang CT. Molecular cloning and characterization of NPR1 gene from Arachis hypogaea. Mol Biol Rep 2014; 41:5247-56. [PMID: 24842264 DOI: 10.1007/s11033-014-3395-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 05/02/2014] [Indexed: 10/25/2022]
Abstract
The NPR1 gene was an important regulator for a plant disease resistance. The cDNA of NPR1 gene was cloned from peanut cultivar Ri Hua 1 by rapid amplification of cDNA ends-polymerase chain reaction (RACE-PCR). The full length cDNA of Arachis hypogaea NPR1 consisted of 2,078 base pairs with a 1,446 bp open-reading frame encoding 481 amino acids. The predicted NPR1 contained the highly conserved functional domains (BTB/POZ domain from M1 to D116), protein-protein interaction domains (three ankyrin repeats from K158 to L186; N187 to L217 and R221 to D250) and one NPR1-like domain (C262 to S469). The DNA sequence of the NPR1 gene was 2,332 or 2,223 bp. Both two sequences contained three introns and four exons. The NPR1 transcripts were expressed mainly in roots and leaves, while fewer signals were detected in the stems. Amount of the NPR1 transcript was significantly increased 1 h after salicylic acid challenge and was eventually 5.3 times greater than that in the control group. Both the DNA sequence and the coding sequence were obtained from eight cultivars and nine wild species of Arachis. Maximum likelihood analyses of d N/d S ratios for 25 sequences from different species showed that different selection pressures may have acted on different branches.
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Affiliation(s)
- Qi Wu
- Shandong Peanut Research Institute (SPRI), 126 Fushan Rd., Qingdao, 266100, People's Republic of China,
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Chen JC, Lu HC, Chen CE, Hsu HF, Chen HH, Yeh HH. The NPR1 ortholog PhaNPR1 is required for the induction of PhaPR1 in Phalaenopsis aphrodite. BOTANICAL STUDIES 2013; 54:31. [PMID: 28510874 PMCID: PMC5432770 DOI: 10.1186/1999-3110-54-31] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 08/28/2013] [Indexed: 05/08/2023]
Abstract
BACKGROUND Systematic acquired resistance (SAR) is an effective broad-spectrum defense mechanism that confers long-lasting protection against biotrophic pathogens trough defense related salicylic acid (SA) signaling. Gene(s) involved in SAR have been extensively studied in dicot plants; however, remains largely unresolved in monocot plants. NPR1, an evolutionary conserved gene, plays a central role in SAR, and PR-1 is widely used as a marker for effective SA signaling. RESULTS We identified NPR1 and PR-1 homologous genes, PhaNPR1 and PhaPR1, from an economically important orchid, Phalaenopsis aphrodite, and characterized their roles in SA signaling and Cymbidium mosaic virus (CymMV) resistance. A phylogenetic analysis of NPR1 homologs showed that these genes appear to have evolved before angiospermy. Similar to Arabidopsis NPR1, PhaNPR1 was only moderately induced upon SA treatment and CymMV infection. Although PhaPR1 shows only 36% identity with AtPR1, its promoter shared conserved elements with those of other PR-1 genes, and it was induced upon SA treatment and CymMV infection. After CymMV infection, silencing on PhaNPR1 also reduced PhaPR1 expression; however, CymMV accumulation was not affected. CONCLUSIONS In conclusion, after virus infection, PhaNPR1 is required for PhaPR1 induction, but plays little role in defense against CymMV.
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Affiliation(s)
- Jen-Chih Chen
- Institute of Biotechnology, National Taiwan University, Taipei 106, Taiwan, ROC
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei 106, Taiwan
| | - Hsiang-Chia Lu
- Department of Plant Pathology and Microbiology, National Taiwan University, 1, sec 4, Rooselvet Road, Taipei, 106 Taiwan
| | - Cheng-En Chen
- Department of Plant Pathology and Microbiology, National Taiwan University, 1, sec 4, Rooselvet Road, Taipei, 106 Taiwan
| | - Hua-Fang Hsu
- Department of Plant Pathology and Microbiology, National Taiwan University, 1, sec 4, Rooselvet Road, Taipei, 106 Taiwan
| | - Hong-Hwa Chen
- Department of Life Sciences, National Cheng Kung University, Tainan, 701 Taiwan
- Institute of Tropical Plant Sciences, National Cheng Kung University, Tainan, 701 Taiwan
- Orchid Research Center, National Cheng Kung University, Tainan, 701 Taiwan
| | - Hsin-Hung Yeh
- Department of Plant Pathology and Microbiology, National Taiwan University, 1, sec 4, Rooselvet Road, Taipei, 106 Taiwan
- Research Center for Plant Medicine, National Taiwan University, Taipei, 106 Taiwan
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Chen XK, Zhang JY, Zhang Z, Du XL, Du BB, Qu SC. Overexpressing MhNPR1 in transgenic Fuji apples enhances resistance to apple powdery mildew. Mol Biol Rep 2012; 39:8083-9. [PMID: 22539187 DOI: 10.1007/s11033-012-1655-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Accepted: 04/16/2012] [Indexed: 11/27/2022]
Abstract
Fuji is susceptible to fungal diseases like apple powdery mildew. Non-expressor of pathogenesis-related gene 1 (NPR1) plays a key role in regulating salicylic acid (SA)-mediated systemic acquired resistance (SAR). Previous studies show that overexpressing the Malus hupehensis-derived NPR1 (MhNPR1) gene in tobacco induces the transcript expression of pathogenesis-related genes (PRs) and resistance to the fungus Botrytis cinerea. In this study we introduced the MhNPR1 gene into the 'Fuji' apple via Agrobacterium-mediated transformation. Four transgenic apple lines were verified by PCR and RT-PCR. The semi-quantitative RT-PCR results showed that transcript overexpression of the MhNPR1 gene induced the expression of MdPRs and MdMLO genes known to interact with powdery mildew. Furthermore, the transgenic apple plants resisted infection by apple powdery mildew better than the wild-type plants. As a result, transcript overexpression of the MhNPR1 gene induced SAR and enhanced the Fuji apple's resistance to fungal disease.
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Affiliation(s)
- Xiu-Kong Chen
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
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Wen Z, Gao M, Jiao C, Wang Q, Xu H, Walter M, Xu W, Bassett C, Wang X. Characterization and Expression Analysis of a Retinoblastoma-Related Gene from Chinese Wild Vitis pseudoreticulata. PLANT MOLECULAR BIOLOGY REPORTER 2012; 30:983-991. [PMID: 24415838 PMCID: PMC3881572 DOI: 10.1007/s11105-011-0410-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Retinoblastoma-related (RBR) genes, a conserved gene family in higher eukaryotes, play important roles in cell differentiation, development, and mammalian cell death; however, little is known of their function in plants. In this study, a RBR gene was isolated from the Chinese wild grape, Vitis pseudoreticulata W. T. Wang clone "Baihe-35-1", and designated as VpRBR. The cDNA sequence of VpRBR was 3,030 bp and contained an open reading frame of 3,024 bp. Conceptual translation of this gene indicated a composition of 1,007 amino acids with a predicted molecular mass of 117.3 kDa. The predicted protein showed a retinoblastoma-associated protein domain A from amino acid residues 416 to 579, and domain B from residues 726 to 855. The result of expression analysis indicated that VpRBR was expressed in tissues, leaves, stem, tendrils, flower, and grape skin at different expression levels. Further quantitative reverse transcription-PCR (qRT-PCR) data indicated that VpRBR levels were higher in Erysiphe necator-treated "Baihe-35-1" and "Baihe-13-1", two resistant clones of Chinese wild V. pseudoreticulata, than in E. necator-treated "Hunan-1", a susceptible clone of V. pseudoreticulata. Furthermore, the expression of VpRBR in response to salicylic acid (SA), methyl jasmonate (MeJA), and ethylene (Eth) in grape leaves was also investigated. Taken together, these data indicate that VpRBR may contribute to some aspect of powdery mildew resistance in grape.
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Affiliation(s)
- Zhifeng Wen
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of Horticulture, Northwest A & F University, Yangling, Shaanxi 712100 People’s Republic of China
- State Key Laboratory of Crop Stress Biology in Arid Areas (Northwest A&F University), Yangling, Shaanxi 712100 People’s Republic of China
| | - Min Gao
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of Horticulture, Northwest A & F University, Yangling, Shaanxi 712100 People’s Republic of China
- State Key Laboratory of Crop Stress Biology in Arid Areas (Northwest A&F University), Yangling, Shaanxi 712100 People’s Republic of China
| | - Chen Jiao
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of Horticulture, Northwest A & F University, Yangling, Shaanxi 712100 People’s Republic of China
- State Key Laboratory of Crop Stress Biology in Arid Areas (Northwest A&F University), Yangling, Shaanxi 712100 People’s Republic of China
| | - Qian Wang
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of Horticulture, Northwest A & F University, Yangling, Shaanxi 712100 People’s Republic of China
- State Key Laboratory of Crop Stress Biology in Arid Areas (Northwest A&F University), Yangling, Shaanxi 712100 People’s Republic of China
| | - Hui Xu
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of Horticulture, Northwest A & F University, Yangling, Shaanxi 712100 People’s Republic of China
- State Key Laboratory of Crop Stress Biology in Arid Areas (Northwest A&F University), Yangling, Shaanxi 712100 People’s Republic of China
| | - Monika Walter
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of Horticulture, Northwest A & F University, Yangling, Shaanxi 712100 People’s Republic of China
| | - Weirong Xu
- School of Agriculture, Ningxia University, Yinchuan, Ningxia 750021 People’s Republic of China
| | - Carole Bassett
- USDA-ARS, Appalachian Fruit Research Station, 2217 Wiltshire Road, Kearneysville, WV 25430 USA
| | - Xiping Wang
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, College of Horticulture, Northwest A & F University, Yangling, Shaanxi 712100 People’s Republic of China
- State Key Laboratory of Crop Stress Biology in Arid Areas (Northwest A&F University), Yangling, Shaanxi 712100 People’s Republic of China
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