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Karthik K, Hada A, Bajpai A, Patil BL, Paraselli B, Rao U, Sreevathsa R. A novel tasi RNA-based micro RNA-induced gene silencing strategy to tackle multiple pests and pathogens in cotton (Gossypium hirsutum L.). PLANTA 2022; 257:20. [PMID: 36538040 DOI: 10.1007/s00425-022-04055-2] [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: 09/16/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
This study demonstrates the combinatorial management of multiple pests through a trans-acting siRNA (tasiRNA)-based micro RNA-induced gene silencing (MIGS) strategy. Transgenic cotton events demonstrated improved efficacy against cotton leaf curl disease, cotton leaf hopper and root-knot nematode. Cotton (Gossypium hirsutum L.), an important commercial crop grown worldwide is confronted by several pests and pathogens, thus reiterating interventions for their management. In this study, we report, the utility of a novel Arabidopsis miRNA173-directed trans-acting siRNA (tasiRNA)-based micro RNA-induced gene silencing (MIGS) strategy for the simultaneous management of cotton leaf curl disease (CLCuD), cotton leaf hopper (CLH; Amrasca biguttula biguttula) and root-knot nematode (RKN, Meloidogyne incognita). Cotton transgenics were developed with the MIGS construct targeting a total of 7 genes by an apical meristem-targeted in planta transformation strategy. Stable transgenics were selected using stringent selection pressure, molecular characterization and stress-specific bio-efficacy studies. We identified 8 superior events with 50-100% resistance against CLCuD, while reduction in the root-knot nematode multiplication factor in the range of 35-75% confirmed resistance to RKN. These transgenic cotton events were also detrimental to the growth and development of CLH, as only 43.3-62.5% of nymphs could survive. Based on the corroborating evidences obtained by all the bioefficacy analyses, 3 events viz., L-75-1, E-27-11, E-27-7 were found to be consistent in tackling the target pests. To the best of our knowledge, this report is the first of its kind demonstrating the possibility of combinatorial management of pests/diseases in cotton using MIGS approach. These identified events demonstrate immense utility of the strategy towards combinatorial stress management in cotton improvement programs.
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Affiliation(s)
- Kesiraju Karthik
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
- Regional Centre for Biotechnology, National Biotech Cluster, Faridabad-Gurugram Highway, New Delhi, India
| | - Alkesh Hada
- Division of Nematology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Akansha Bajpai
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
| | - Basavaprabhu L Patil
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
- ICAR-Indian Institute of Horticultural Research, Bengaluru, India
| | | | - Uma Rao
- Division of Nematology, ICAR-Indian Agricultural Research Institute, New Delhi, India.
- SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India.
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Joshi I, Kumar A, Kohli D, Bhattacharya R, Sirohi A, Chaudhury A, Jain PK. Gall-specific promoter, an alternative to the constitutive CaMV35S promoter, drives host-derived RNA interference targeting Mi-msp2 gene to confer effective nematode resistance. FRONTIERS IN PLANT SCIENCE 2022; 13:1007322. [PMID: 36426141 PMCID: PMC9679145 DOI: 10.3389/fpls.2022.1007322] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
One of the major obligate plant parasites causing massive economic crop losses belongs to the class of root-knot nematodes (RKNs). Targeting of major nematode parasitism genes via Host Delivered-RNAi (HD-RNAi) to confer silencing is established as one of the most effective approaches to curb nematode infection. Utilizing nematode-responsive root-specific (NRRS) promoters to design a dsRNA molecule targeting approach to hamper nematode parasitism. Here, a previously validated peroxidase gall specific promoter, pAt2g18140, from Arabidopsis was employed to express the dsRNA construct of the nematode effector gene Mi-msp2 from Meloidogyne incognita. Arabidopsis RNAi lines of CaMV35S::Mi-msp2-RNAi and pAt2g18140::Mi-msp2-RNAi were compared with control plants to assess the decrease in plant nematode infection. When subjected to infection, the maximum reductions in the numbers of galls, females and egg masses in the CaMV35S::Mi-msp2-RNAi lines were 61%, 66% and 95%, respectively, whereas for the pAt2g18140::Mi-msp2-RNAi lines, they were 63%, 68% and 100%, respectively. The reduction in transcript level ranged from 79%-82% for CaMV35S::Mi-msp2-RNAi and 72%-79% for the pAt2g18140::Mi-msp2-RNAi lines. Additionally, a reduction in female size and a subsequent reduction in next-generation fecundity demonstrate the efficacy and potential of the gall specific promoter pAt2g18140 for utilization in the development of HD-RNAi constructs against RKN, as an excellent alternative to the CaMV35S promoter.
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Affiliation(s)
- Ila Joshi
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
- Department of Bio and Nano Technology, Bio & Nano Technology Centre, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India
| | - Anil Kumar
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
- Department of Entomology, Nematology and Chemistry Units, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
| | - Deshika Kohli
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
| | | | - Anil Sirohi
- Division of Nematology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Ashok Chaudhury
- Department of Bio and Nano Technology, Bio & Nano Technology Centre, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India
| | - Pradeep K. Jain
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
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Kumar A, Joshi I, Changwal C, Sirohi A, Jain PK. Host-delivered RNAi-mediated silencing of the root-knot nematode (Meloidogyne incognita) effector genes, Mi-msp10 and Mi-msp23, confers resistance in Arabidopsis and impairs reproductive ability of the root-knot nematode. PLANTA 2022; 256:74. [PMID: 36083352 DOI: 10.1007/s00425-022-03977-1] [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: 06/03/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
Mi-msp10 and Mi-msp23 effector genes play a significant role during Meloidogyne incognita parasitism on Arabidopsis roots. The role of these genes was confirmed by demonstrating the decrease of the level of susceptibility of Arabidopsis by the silencing of Mi-msp10 and Mi-msp23 genes using HD-RNAi technology. Root-knot nematodes (RKNs) are the most damaging pathogens severely affecting global food production. The sustainable options to minimize menace of nematode populations through economically feasible measures are limited. Thus, the development of innovative and target-specific strategies that aid in their management is imperative. RNAi technology has emerged as a sustainable and target-specific alternative to control phytonematodes. Here, we characterized two novel subventral gland and dorsal gland-specific effectors, Mi-msp10 and Mi-msp23, to determine their potential effectiveness in controlling M. incognita. Comparative developmental profiling using qRT-PCR revealed higher expression of both effectors in the adult nematode female. Furthermore, functional evaluation of Mi-msp10 and Mi-msp23 dsRNA cassettes was performed using host-delivered RNAi (HD-RNAi) in Arabidopsis. The transgenic lines were examined against M. incognita, and the phenotypic effect of HD-RNAi was evident with a 61% and 51% reduction in gall formation in the Mi-msp10 and Mi-msp23 RNAi lines, respectively. A significant drop in the nematode adult females by 59% for Mi-msp10 and 49% for Mi-msp23-RNAi lines was observed. Similarly, production in egg masses decreased significantly by 76% (Mi-msp10) and 60% (Mi-msp23) for the RNAi lines, which eventually decreased the reproductive factor by 92% and 75%, respectively. The gene expression analysis showed a significant decrease in the transcript level by up to 72% (Mi-msp10) and 66% (Mi-msp23) in M. incognita females feeding on RNAi lines, providing further evidence of effective gene silencing. Overall, our findings provide useful information and support further development of RNAi-based strategies to control M. incognita.
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Affiliation(s)
- Anil Kumar
- ICAR-National Institute for Plant Biotechnology, New Delhi, 110012, India
| | - Ila Joshi
- ICAR-National Institute for Plant Biotechnology, New Delhi, 110012, India
| | - Chunoti Changwal
- ICAR-IARI, Division of Plant Physiology, New Delhi, 110012, India
| | - Anil Sirohi
- ICAR-IARI, Division of Nematology, New Delhi, 110012, India
| | - Pradeep K Jain
- ICAR-National Institute for Plant Biotechnology, New Delhi, 110012, India.
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Aparecida Godinho Mendes R, Basso MF, Amora DX, Silva AP, Paes-de-Melo B, Coiti Togawa R, Saliba Albuquerque EV, Lisei-de-Sa ME, Lima Pepino Macedo L, Lourenço-Tessutti IT, Grossi-de-Sa MF. In planta RNAi approach targeting three M. incognita effector genes disturbed the process of infection and reduced plant susceptibility. Exp Parasitol 2022; 238:108246. [PMID: 35460697 DOI: 10.1016/j.exppara.2022.108246] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 02/26/2022] [Accepted: 03/13/2022] [Indexed: 11/04/2022]
Abstract
Meloidogyne incognita is the most economically important species of the root-knot nematode complex causing damage to several crops worldwide. During parasitism in host plants, M. incognita secretes several effector proteins to suppress the plant immune system, manipulate the plant cell cycle, and promote parasitism. Several effector proteins have been identified, but their relationship with plant parasitism by M. incognita has not been fully confirmed. Herein, the Minc01696, Minc00344, and Minc00801 putative effector genes were evaluated to assess their importance during soybean and Nicotiana tabacum parasitism by M. incognita. For this study, we used in planta RNAi technology to overexpress dsRNA molecules capable of producing siRNAs that target and downregulate these nematode effector genes. Soybean composite roots and N. tabacum lines were successfully generated, and susceptibility level to M. incognita was evaluated. Consistently, both transgenic soybean roots and transgenic N. tabacum lines carrying the RNAi strategy showed reduced susceptibility to M. incognita. The number of galls per plant and the number of egg masses per plant were reduced by up to 85% in transgenic soybean roots, supported by the downregulation of effector genes in M. incognita during parasitism. Similarly, the number of galls per plant, the number of egg masses per plant, and the nematode reproduction factor were reduced by up to 83% in transgenic N. tabacum lines, which was also supported by the downregulation of the Minc00801 effector gene during parasitism. Therefore, our data indicate that all three effector genes can be a target in the development of new biotechnological tools based on the RNAi strategy in economically important crops for M. incognita control.
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Affiliation(s)
- Reneida Aparecida Godinho Mendes
- Embrapa Genetic Resources and Biotechnology, Brasília, DF, 70297-400, Brazil; Federal University of Brasília, Brasília, DF, 70910-900, Brazil
| | - Marcos Fernando Basso
- Embrapa Genetic Resources and Biotechnology, Brasília, DF, 70297-400, Brazil; National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brazil
| | - Deisy Xavier Amora
- Embrapa Genetic Resources and Biotechnology, Brasília, DF, 70297-400, Brazil
| | | | - Bruno Paes-de-Melo
- Embrapa Genetic Resources and Biotechnology, Brasília, DF, 70297-400, Brazil; Federal University of Viçosa, Viçosa, MG, 36570-900, Brazil; National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brazil
| | - Roberto Coiti Togawa
- Embrapa Genetic Resources and Biotechnology, Brasília, DF, 70297-400, Brazil; National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brazil
| | | | - Maria Eugênia Lisei-de-Sa
- Embrapa Genetic Resources and Biotechnology, Brasília, DF, 70297-400, Brazil; Agricultural Research Company of Minas Gerais, Uberaba, MG, 38060-040, Brazil; National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brazil
| | - Leonardo Lima Pepino Macedo
- Embrapa Genetic Resources and Biotechnology, Brasília, DF, 70297-400, Brazil; National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brazil
| | - Isabela Tristan Lourenço-Tessutti
- Embrapa Genetic Resources and Biotechnology, Brasília, DF, 70297-400, Brazil; National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brazil
| | - Maria Fatima Grossi-de-Sa
- Embrapa Genetic Resources and Biotechnology, Brasília, DF, 70297-400, Brazil; Catholic University of Brasília, Brasília, DF, 71966-700, Brazil; National Institute of Science and Technology-INCT PlantStress Biotech-EMBRAPA, Brazil.
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Moreira VJV, Lourenço-Tessutti IT, Basso MF, Lisei-de-Sa ME, Morgante CV, Paes-de-Melo B, Arraes FBM, Martins-de-Sa D, Silva MCM, de Almeida Engler J, Grossi-de-Sa MF. Minc03328 effector gene downregulation severely affects Meloidogyne incognita parasitism in transgenic Arabidopsis thaliana. PLANTA 2022; 255:44. [PMID: 35050413 DOI: 10.1007/s00425-022-03823-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 01/04/2022] [Indexed: 05/24/2023]
Abstract
Minc03328 effector gene downregulation triggered by in planta RNAi strategy strongly reduced plant susceptibility to Meloidogyne incognita and suggests that Minc03328 gene is a promising target for the development of genetically engineered crops to improve plant tolerance to M. incognita. Meloidogyne incognita is the most economically important species of root-knot nematodes (RKN) and causes severe damage to crops worldwide. M. incognita secretes several effector proteins to suppress the host plant defense response, and manipulate the plant cell cycle and other plant processes facilitating its parasitism. Different secreted effector proteins have already been identified in M. incognita, but not all have been characterized or have had the confirmation of their involvement in nematode parasitism in their host plants. Herein, we characterized the Minc03328 (Minc3s00020g01299) effector gene, confirmed its higher expression in the early stages of M. incognita parasitism in plants, as well as the accumulation of the Minc03328 effector protein in subventral glands and its secretion. We also discuss the potential for simultaneous downregulation of its paralogue Minc3s00083g03984 gene. Using the in planta RNA interference strategy, Arabidopsis thaliana plants overexpressing double-stranded RNA (dsRNA) were generated to specifically targeting and downregulating the Minc03328 gene during nematode parasitism. Transgenic Minc03328-dsRNA lines that significantly downregulated Minc03328 gene expression during M. incognita parasitism were significantly less susceptible. The number of galls, egg masses, and [galls/egg masses] ratio were reduced in these transgenic lines by up to 85%, 90%, and 87%, respectively. Transgenic Minc03328-dsRNA lines showed the presence of fewer and smaller galls, indicating that parasitism was hindered. Overall, data herein strongly suggest that Minc03328 effector protein is important for M. incognita parasitism establishment. As well, the in planta Minc03328-dsRNA strategy demonstrated high biotechnological potential for developing crop species that could efficiently control RKN in the field.
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Affiliation(s)
- Valdeir Junio Vaz Moreira
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, 70770-917, Brazil
- Biotechnology Center, PPGBCM, UFRGS, Porto Alegre, RS, 90040-060, Brazil
- Federal University of Brasilia, UNB, Brasilia, DF, 70910-900, Brazil
| | - Isabela Tristan Lourenço-Tessutti
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, 70770-917, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, 70297-400, Brazil
| | - Marcos Fernando Basso
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, 70770-917, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, 70297-400, Brazil
| | - Maria Eugênia Lisei-de-Sa
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, 70770-917, Brazil
- Federal University of Brasilia, UNB, Brasilia, DF, 70910-900, Brazil
- Agriculture Research Company of Minas Gerais State, Uberaba, MG, 31170-495, Brazil
| | - Carolina Vianna Morgante
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, 70770-917, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, 70297-400, Brazil
- Embrapa Semiarid, Petrolina, PE, 56302-970, Brazil
| | - Bruno Paes-de-Melo
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, 70770-917, Brazil
- Federal University of Viçosa, Viçosa, MG, 36570-900, Brazil
| | - Fabrício Barbosa Monteiro Arraes
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, 70770-917, Brazil
- Biotechnology Center, PPGBCM, UFRGS, Porto Alegre, RS, 90040-060, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, 70297-400, Brazil
| | - Diogo Martins-de-Sa
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, 70770-917, Brazil
- Federal University of Brasilia, UNB, Brasilia, DF, 70910-900, Brazil
| | - Maria Cristina Mattar Silva
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, 70770-917, Brazil
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, 70297-400, Brazil
| | - Janice de Almeida Engler
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, 70297-400, Brazil
- INRAE, Université Côte d'Azur, CNRS, ISA, 06903, Sophia Antipolis, France
| | - Maria Fatima Grossi-de-Sa
- Embrapa Genetic Resources and Biotechnology, Brasilia, DF, 70770-917, Brazil.
- National Institute of Science and Technology, INCT PlantStress Biotech, Embrapa, 70297-400, Brazil.
- Catholic University of Brasilia, Brasilia, DF, 71966-700, Brazil.
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