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Badiyal A, Dhiman S, Singh A, Rathour R, Pathania A, Katoch S, Padder BA, Sharma PN. Mapping of adult plant recessive resistance to anthracnose in Indian common bean landrace Baspa/KRC 8. Mol Biol Rep 2024; 51:254. [PMID: 38302755 DOI: 10.1007/s11033-023-09160-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 12/14/2023] [Indexed: 02/03/2024]
Abstract
BACKGROUND The common bean (Phaseolus vulgaris) has become the food of choice owing to its wealthy nutritional profile, leading to a considerable increase in its cultivation worldwide. However, anthracnose has been a major impediment to production and productivity, as elite bean cultivars are vulnerable to this disease. To overcome barriers in crop production, scientists worldwide are working towards enhancing the genetic diversity of crops. One way to achieve this is by introducing novel genes from related crops, including landraces like KRC 8. This particular landrace, found in the North Western Himalayan region, has shown adult plant resistance against anthracnose and also possesses a recessive resistance gene. METHODS AND RESULTS In this study, a population of 179 F2:9 RIL individuals (Jawala × KRC 8) was evaluated at both phenotypic and genotypic levels using over 830 diverse molecular markers to map the resistance gene present in KRC 8. We have successfully mapped a resistance gene to chromosome Pv01 using four SSR markers, namely IAC 238, IAC 235, IAC 259, and BM 146. The marker IAC 238 is closely linked to the gene with a distance of 0.29 cM, while the other markers flank the recessive resistance gene at 10.87 cM (IAC 259), 17.80 cM (BM 146), and 25.22 cM (IAC 235). Previously, a single recessive anthracnose resistance gene (co-8) has been reported in the common bean accession AB 136. However, when we performed PCR amplification with our tightly linked marker IAC 238, we got different amplicons in AB 136 and KRC 8. Interestingly, the susceptible cultivar Jawala produced the same amplicon as AB 136. This observation indicated that the recessive gene present in KRC 8 is different from co-8. As the gene is located far away from the Co-1 locus, we suggest naming the recessive gene co-Indb/co-19. Fine mapping of co-Indb in KRC 8 may provide new insights into the cloning and characterization of this recessive gene so that it can be incorporated into future bean improvement programs. Further, the tightly linked marker IAC 238 can be utilized in marker assisted introgression in future bean breeding programs. CONCLUSION The novel co-Indb gene present in Himalayan landrace KRC 8, showing adult plant resistance against common bean anthracnose, is independent from all the resistance genes previously located on chromosome Pv01.
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Affiliation(s)
- Anila Badiyal
- Molecular Plant Pathology Laboratory, Department of Plant Pathology, CSK HP Agricultural University, Palampur, 176 062, Himachal Pradesh, India
| | - Shiwali Dhiman
- Molecular Plant Pathology Laboratory, Department of Plant Pathology, CSK HP Agricultural University, Palampur, 176 062, Himachal Pradesh, India
| | - Amar Singh
- Molecular Plant Pathology Laboratory, Department of Plant Pathology, CSK HP Agricultural University, Palampur, 176 062, Himachal Pradesh, India
| | - Rajeev Rathour
- Department of Agricultural Biotechnology, CSK HP Agricultural University, Palampur, 176 062, Himachal Pradesh, India
| | - Anju Pathania
- Faculty of Agriculture, DAV University, Jalandhar, 144001, Punjab, India
| | - Shabnam Katoch
- Molecular Plant Pathology Laboratory, Department of Plant Pathology, CSK HP Agricultural University, Palampur, 176 062, Himachal Pradesh, India
| | - Bilal A Padder
- Plant Virology and Molecular Plant Pathology Laboratory, Division of Plant Pathology, SKUAST-K Srinagar, Srinagar, 190025, J&K, India.
| | - Prem N Sharma
- Molecular Plant Pathology Laboratory, Department of Plant Pathology, CSK HP Agricultural University, Palampur, 176 062, Himachal Pradesh, India.
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Lateef I, Katoch S, Katoch A, Badiyal A, Pathania A, Dhiman S, Nisa Q, Bashir A, Nabi A, Nabi N, Fayaz T, Gulzar G, Shah MD, Shikari AB, Dar ZA, Itoo H, Shah RA, Sofi TA, Sharma V, Sharma MK, Rathour R, Sharma PN, Padder BA. Fine mapping of a new common bean anthracnose resistance gene (Co-18) to the proximal end of Pv10 in Indian landrace KRC-5. Theor Appl Genet 2024; 137:32. [PMID: 38270625 DOI: 10.1007/s00122-023-04539-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 12/27/2023] [Indexed: 01/26/2024]
Abstract
KEY MESSAGE Mapping and fine mapping of bean anthracnose resistance genes is a continuous process. We report fine mapping of anthracnose resistance gene Co-18 which is the first anthracnose gene mapped to Pv10. The discovery of resistance gene is a major gain in the bean anthracnose pathosystem research. Among the Indian common bean landraces, KRC-5 exhibit high levels of resistance to the bean anthracnose pathogen Colletotrichum lindemuthianum. To precisely map the anthracnose resistance gene, we used a Recombinant Inbred Line (F2:9 RIL) population (KRC-5 × Jawala). The inheritance test revealed that KRC-5 carries a dominant resistance gene temporarily designated as Co-18. We discovered two RAPD markers linked to Co-18 among 287 RAPD markers. These RAPD markers were eventually developed into SCARs (Sc-OPR15 and Sc-OPF6) and flank Co-18 on chromosome Pv10 at a distance of 5.3 and 4.2 cM, respectively. At 4.0-4.1 Mb on Pv10, we detected a SNP (single-nucleotide polymorphism) signal. We synthesized 58 SSRs and 83 InDels from a pool of 135 SSRs and 1134 InDels, respectively. Five SSRs, four InDels, and two SCARs were used to generate the high-density linkage map, which led to the identification of two SSRs (SSR24 and SSR36) that are tightly linked to Co-18. These two SSRs flank the Co-18 to 178 kb genomic region with 13 candidate genes including five NLR (nucleotide-binding and leucine-rich repeat) genes. The closely linked markers SSR24 and SSR36 will be used in cloning and pyramiding of the Co-18 gene with other R genes to develop durable resistant bean varieties.
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Affiliation(s)
- Irtifa Lateef
- Plant Virology and Molecular Plant Pathology Laboratory, Division of Plant Pathology, SKUAST-Kashmir, Shalimar, Srinagar, 190025, India
| | - Shabnam Katoch
- Department of Plant Pathology, CSK HP Agricultural University, Palampur, HP, 176062, India
| | - Abhishek Katoch
- University Institute of Agricultural Sciences, Chandigarh University, Ajitgarh, India
| | - Anila Badiyal
- Department of Plant Pathology, CSK HP Agricultural University, Palampur, HP, 176062, India
| | - Anju Pathania
- Faculty of Agriculture, DAV University, Jalandhar, Punjab, 144001, India
| | - Shiwali Dhiman
- Department of Plant Pathology, CSK HP Agricultural University, Palampur, HP, 176062, India
| | - Qadrul Nisa
- Plant Virology and Molecular Plant Pathology Laboratory, Division of Plant Pathology, SKUAST-Kashmir, Shalimar, Srinagar, 190025, India
| | - Adfar Bashir
- Plant Virology and Molecular Plant Pathology Laboratory, Division of Plant Pathology, SKUAST-Kashmir, Shalimar, Srinagar, 190025, India
| | - Aasiya Nabi
- Plant Virology and Molecular Plant Pathology Laboratory, Division of Plant Pathology, SKUAST-Kashmir, Shalimar, Srinagar, 190025, India
| | - Naziya Nabi
- Plant Virology and Molecular Plant Pathology Laboratory, Division of Plant Pathology, SKUAST-Kashmir, Shalimar, Srinagar, 190025, India
| | - Tabia Fayaz
- Plant Virology and Molecular Plant Pathology Laboratory, Division of Plant Pathology, SKUAST-Kashmir, Shalimar, Srinagar, 190025, India
| | - Gazala Gulzar
- Plant Virology and Molecular Plant Pathology Laboratory, Division of Plant Pathology, SKUAST-Kashmir, Shalimar, Srinagar, 190025, India
| | - Mehraj D Shah
- Plant Virology and Molecular Plant Pathology Laboratory, Division of Plant Pathology, SKUAST-Kashmir, Shalimar, Srinagar, 190025, India
| | - Asif B Shikari
- Division of Plant Breeding and Genetics, SKUAST-K, FoA, Wadura, Baramulla, Sopore, India
| | | | - Hamidullah Itoo
- Ambri Apple Research Center, Pahanoo, SKUAST-K, Shopian, 192303, India
| | - Rafiq A Shah
- Ambri Apple Research Center, Pahanoo, SKUAST-K, Shopian, 192303, India
| | - Tariq A Sofi
- Plant Virology and Molecular Plant Pathology Laboratory, Division of Plant Pathology, SKUAST-Kashmir, Shalimar, Srinagar, 190025, India
| | - Vivek Sharma
- Department of Plant Pathology, CSK HP Agricultural University, Palampur, HP, 176062, India
| | - M K Sharma
- Division of Fruit Science, SKUAST-Kashmir, Shalimar, Srinagar, 190025, India
| | - Rajeev Rathour
- Department of Agricultural Biotechnology, CSK HP Agricultural University, Palampur, HP, 176062, India
| | - P N Sharma
- Department of Plant Pathology, CSK HP Agricultural University, Palampur, HP, 176062, India
| | - Bilal A Padder
- Plant Virology and Molecular Plant Pathology Laboratory, Division of Plant Pathology, SKUAST-Kashmir, Shalimar, Srinagar, 190025, India.
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Singh G, Singh N, Ellur RK, Balamurugan A, Prakash G, Rathour R, Mondal KK, Bhowmick PK, Gopala Krishnan S, Nagarajan M, Seth R, Vinod KK, Singh V, Bollinedi H, Singh AK. Genetic Enhancement for Biotic Stress Resistance in Basmati Rice through Marker-Assisted Backcross Breeding. Int J Mol Sci 2023; 24:16081. [PMID: 38003271 PMCID: PMC10671030 DOI: 10.3390/ijms242216081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/11/2023] [Accepted: 08/17/2023] [Indexed: 11/26/2023] Open
Abstract
Pusa Basmati 1509 (PB1509) is one of the major foreign-exchange-earning varieties of Basmati rice; it is semi-dwarf and early maturing with exceptional cooking quality and strong aroma. However, it is highly susceptible to various biotic stresses including bacterial blight and blast. Therefore, bacterial blight resistance genes, namely, xa13 + Xa21 and Xa38, and fungal blast resistance genes Pi9 + Pib and Pita were incorporated into the genetic background of recurrent parent (RP) PB1509 using donor parents, namely, Pusa Basmati 1718 (PB1718), Pusa 1927 (P1927), Pusa 1929 (P1929) and Tetep, respectively. Foreground selection was carried out with respective gene-linked markers, stringent phenotypic selection for recurrent parent phenotype, early generation background selection with Simple sequence repeat (SSR) markers, and background analysis at advanced generations with Rice Pan Genome Array comprising 80K SNPs. This has led to the development of Near isogenic lines (NILs), namely, Pusa 3037, Pusa 3054, Pusa 3060 and Pusa 3066 carrying genes xa13 + Xa21, Xa38, Pi9 + Pib and Pita with genomic similarity of 98.25%, 98.92%, 97.38% and 97.69%, respectively, as compared to the RP. Based on GGE-biplot analysis, Pusa 3037-1-44-3-164-20-249-2 carrying xa13 + Xa21, Pusa 3054-2-47-7-166-24-261-3 carrying Xa38, Pusa 3060-3-55-17-157-4-124-1 carrying Pi9 + Pib, and Pusa 3066-4-56-20-159-8-174-1 carrying Pita were identified to be relatively stable and better-performing individuals in the tested environments. Intercrossing between the best BC3F1s has led to the generation of Pusa 3122 (xa13 + Xa21 + Xa38), Pusa 3124 (Xa38 + Pi9 + Pib) and Pusa 3123 (Pi9 + Pib + Pita) with agronomy, grain and cooking quality parameters at par with PB1509. Cultivation of such improved varieties will help farmers reduce the cost of cultivation with decreased pesticide use and improve productivity with ensured safety to consumers.
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Affiliation(s)
- Gagandeep Singh
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India (N.S.); (P.K.B.); (S.G.K.); (K.K.V.)
| | - Niraj Singh
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India (N.S.); (P.K.B.); (S.G.K.); (K.K.V.)
| | - Ranjith Kumar Ellur
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India (N.S.); (P.K.B.); (S.G.K.); (K.K.V.)
| | - Alexander Balamurugan
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India (G.P.)
| | - G. Prakash
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India (G.P.)
| | - Rajeev Rathour
- Department of Agriculture Biotechnology, CSKHPKV, Palampur 176062, Himachal Pradesh, India
| | - Kalyan Kumar Mondal
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India (G.P.)
| | - Prolay Kumar Bhowmick
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India (N.S.); (P.K.B.); (S.G.K.); (K.K.V.)
| | - S. Gopala Krishnan
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India (N.S.); (P.K.B.); (S.G.K.); (K.K.V.)
| | - Mariappan Nagarajan
- Rice Breeding and Genetics Research Centre, ICAR-Indian Agricultural Research Institute, Aduthurai 612101, Tamil Nadu, India
| | - Rakesh Seth
- Regional Station, ICAR-Indian Agricultural Research Institute, Karnal 132001, Haryana, India;
| | - K. K. Vinod
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India (N.S.); (P.K.B.); (S.G.K.); (K.K.V.)
| | - Varsha Singh
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India (N.S.); (P.K.B.); (S.G.K.); (K.K.V.)
| | - Haritha Bollinedi
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India (N.S.); (P.K.B.); (S.G.K.); (K.K.V.)
| | - Ashok Kumar Singh
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India (N.S.); (P.K.B.); (S.G.K.); (K.K.V.)
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Biswas B, Thakur K, Pote TD, Sharma KD, Krishnan SG, Singh AK, Sharma TR, Rathour R. Genetic and molecular analysis of leaf blast resistance in Tetep derived line RIL4 and its relationship to genes at Pita/Pita 2 locus. Sci Rep 2023; 13:18683. [PMID: 37907574 PMCID: PMC10618204 DOI: 10.1038/s41598-023-46070-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 10/27/2023] [Indexed: 11/02/2023] Open
Abstract
The Vietnamese indica landrace 'Tetep' is known worldwide for its durable and broad spectrum-resistance to blast. We performed genetic and molecular analyses of leaf blast resistance in a Tetep derived recombinant inbred line 'RIL4' which is resistant to both leaf and neck blast. Phenotypic analysis of segregating F2 progenies suggested that leaf blast resistance in RIL4 was controlled by a dominant gene tentatively designated as Pi-l(t). The gene was mapped to a 2.4 cm region close to the centromere of chromosome 12. The search for the gene content in the equivalent genomic region of reference cv. Nipponbare revealed the presence of five NBS-LRR genes, two of which corresponded to the alleles of Pita and Pi67 genes previously identified from Tetep. The two other genes, LOC_Os12g17090, and LOC_Os12g17490 represented the homologs of stripe rust resistance gene Yr10. The allelic tests with Pita2 and Pi67 lines suggested that the leaf blast resistance gene in RIL4 is either allelic or tightly linked to these genes. The genomic position of the leaf blast resistance gene in RIL4 perfectly coincided with the genomic position of a neck blast resistance gene Pb2 previously identified from this line suggesting that the same gene confers resistance to leaf and neck blast. The present results were discussed in juxtaposition with past studies on the genes of Pita/Pita2 resistance gene complex.
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Affiliation(s)
- B Biswas
- CSK Himachal Pradesh Agricultural University, Palampur, 176062, India
| | - K Thakur
- College of Horticulture and Forestry, Dr YSP University of Horticulture and Forestry, Thunag, 175048, India
| | - T D Pote
- CSK Himachal Pradesh Agricultural University, Palampur, 176062, India
| | - K D Sharma
- CSK Himachal Pradesh Agricultural University, Palampur, 176062, India
| | - S Gopala Krishnan
- Division of Genetics, Indian Agricultural Research Institute, New Delhi, 110012, India
| | - A K Singh
- Division of Genetics, Indian Agricultural Research Institute, New Delhi, 110012, India
| | - T R Sharma
- Indian Council of Agricultural Research, Krishi Bhawan, New Delhi, 110001, India
| | - R Rathour
- CSK Himachal Pradesh Agricultural University, Palampur, 176062, India.
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Rana C, Sharma A, Rathour R, Bansuli, Banyal DK, Rana RS, Sharma P. In vivo and in vitro validation of powdery mildew resistance in garden pea genotypes. Sci Rep 2023; 13:2243. [PMID: 36755040 PMCID: PMC9908938 DOI: 10.1038/s41598-023-28184-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 01/13/2023] [Indexed: 02/10/2023] Open
Abstract
Powdery mildew is one of the serious diseases of garden pea which causes a large number of yield losses. Genetic resistance is quite effective, being cost-effective and environment friendly than fungicide applications. In the present studies an initial attempt has been made to identify resistant genotypes against powdery mildew disease developed from hybridization followed by validation of the disease. The experimental material comprised of 48 genotypes that includes 44 advanced breeding lines was evaluated for powdery mildew incidence in Randomized Complete Block Design with three replications at two locations under field conditions [Palampur (winter 2017-18 and 2018-19) and Kukumseri (summer 2018)] and in vitro at Palampur [detached leaf method and polyhouse conditions]. Ten lines viz., SP7, SN-1, SN-6-1, SN-7-1, SN-2, SN-5-2, SN-6-2, SN-10, SN-21 and SP-281 showed resistant reaction along with check Palam Sumool while 27 lines were identified as moderately resistant in comparison to susceptible check Azad P-1. Besides, six lines namely, SP-2, SP-5, SP-10, SP-24, SA-4 and SP-12-1 gave moderately susceptible reaction along with checks Pb-89 and Palam Priya. Only, SP-19 was categorized as susceptible. The high yielding lines SP-3, SP-6 and SP-22 showed moderately resistant reaction in both natural and artificial conditions. Validation of resistance using molecular markers revealed that neither the parental genotypes nor the progenies possess the er1 gene of JI1559. The er2 linked marker ScOPX-171700 was polymorphic between Palam Sumool and Palam Priya but the marker didn't show polymorphism between er2 harboring line (JI2480). These results suggested that the lines showing resistance under field conditions may have some other genes or alleles for resistance and further confirmation is needed by developing mapping populations with specific gene or gene combinations.
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Affiliation(s)
- Chanchal Rana
- Department of Vegetable Science and Floriculture, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur, Himachal Pradesh, 176062, India
| | - Akhilesh Sharma
- Department of Vegetable Science and Floriculture, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur, Himachal Pradesh, 176062, India.
| | - Rajeev Rathour
- Department of Agricultural Biotechnology, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur, Himachal Pradesh, 176062, India
| | - Bansuli
- Department of Vegetable Science and Floriculture, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur, Himachal Pradesh, 176062, India
| | - Devinder Kumar Banyal
- Department of Plant Pathology, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur, Himachal Pradesh, 176062, India
| | - Ranbir Singh Rana
- Centre for Geo-Informatics Research and Training, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur, Himachal Pradesh, 176062, India
| | - Parveen Sharma
- Department of Vegetable Science and Floriculture, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur, Himachal Pradesh, 176062, India
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Rathour R, Kumar R, Thakur K, Pote TD. Genetic improvement for blast resistance in high-yielding cold-tolerant rice ( Oryza sativa L.) cultivar Himalaya 741 by marker-assisted backcross breeding. 3 Biotech 2022; 12:165. [PMID: 35845107 PMCID: PMC9276897 DOI: 10.1007/s13205-022-03244-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 06/25/2022] [Indexed: 11/28/2022] Open
Abstract
Blast disease and cold stress are two major yield-limiting factors for rice under temperate climates. Marker-assisted backcross breeding approach (MABB) was employed for the improvement of blast resistance in a popular cold-tolerant variety 'Himalaya741' by introgressing a broad-spectrum resistance locus Pi9 from a Basmati donor PB1637. A combined use of phenotypic selection and marker-based genotypic selection ensured speedy reconstitution of the recurrent parent genome (RPG) in backcross progenies; RPG recovery in most of the progenies was > 96% with three progenies namely, HPU-1-33, -38 and -49 showing complete recovery of recurrent parent genome. Notwithstanding a very higher recovery rate of RPG in introgression lines, the lines still inherited a large linkage block > 13.3 Mb with Pi9 from the donor line PB1637. The donor chromosome segments co-inherited with Pi9 gene, however, did not have any adverse effect on the agronomic performance of the Pi9 introgression lines. Of the eight genetically superior Pi9 introgression lines identified, two exhibited resemblance to Himalaya 741 for most of the agronomic traits in addition to having superior grain length and tiller number. The introgression line HPU-1-81 displayed 44% yield superiority over recurrent parent, primarily due to improvement in yield-contributing traits, namely, tiller number, panicle length, thousand-seed-weight and grain length. All the Pi9 introgression lines displayed a high level of resistance comparable to PB1637 against two highly virulent blast races, which collectively displayed compatibility to 15 different major resistance genes. The introgression lines also possessed reproductive stage cold tolerance similar to recurrent parent under prevailing cold stress conditions. The agronomically superior Pi9 introgression lines developed herein are expected to provide a comparable or better substitute to blast susceptible variety Himalaya 741 for extenuating losses due to cold stress and blast disease. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-022-03244-w.
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Affiliation(s)
- Rajeev Rathour
- CSK Himachal Pradesh Agricultural University, Palampur, 176062 India
| | - Rohit Kumar
- CSK Himachal Pradesh Agricultural University, Palampur, 176062 India
| | - Kalpna Thakur
- CSK Himachal Pradesh Agricultural University, Palampur, 176062 India
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Sahu KP, Kumar A, Sakthivel K, Reddy B, Kumar M, Patel A, Sheoran N, Gopalakrishnan S, Prakash G, Rathour R, Gautam RK. Deciphering core phyllomicrobiome assemblage on rice genotypes grown in contrasting agroclimatic zones: implications for phyllomicrobiome engineering against blast disease. Environ Microbiome 2022; 17:28. [PMID: 35619157 PMCID: PMC9134649 DOI: 10.1186/s40793-022-00421-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 05/09/2022] [Indexed: 05/16/2023]
Abstract
BACKGROUND With its adapted microbial diversity, the phyllosphere contributes microbial metagenome to the plant holobiont and modulates a host of ecological functions. Phyllosphere microbiome (hereafter termed phyllomicrobiome) structure and the consequent ecological functions are vulnerable to a host of biotic (Genotypes) and abiotic factors (Environment) which is further compounded by agronomic transactions. However, the ecological forces driving the phyllomicrobiome assemblage and functions are among the most understudied aspects of plant biology. Despite the reports on the occurrence of diverse prokaryotic phyla such as Proteobacteria, Firmicutes, Bacteroides, and Actinobacteria in phyllosphere habitat, the functional characterization leading to their utilization for agricultural sustainability is not yet explored. Currently, the metabarcoding by Next-Generation-Sequencing (mNGS) technique is a widely practised strategy for microbiome investigations. However, the validation of mNGS annotations by culturomics methods is not integrated with the microbiome exploration program. In the present study, we combined the mNGS with culturomics to decipher the core functional phyllomicrobiome of rice genotypes varying for blast disease resistance planted in two agroclimatic zones in India. There is a growing consensus among the various stakeholder of rice farming for an ecofriendly method of disease management. Here, we proposed phyllomicrobiome assisted rice blast management as a novel strategy for rice farming in the future. RESULTS The tropical "Island Zone" displayed marginally more bacterial diversity than that of the temperate 'Mountain Zone' on the phyllosphere. Principal coordinate analysis indicated converging phyllomicrobiome profiles on rice genotypes sharing the same agroclimatic zone. Interestingly, the rice genotype grown in the contrasting zones displayed divergent phyllomicrobiomes suggestive of the role of environment on phyllomicrobiome assembly. The predominance of phyla such as Proteobacteria, Actinobacteria, and Firmicutes was observed in the phyllosphere irrespective of the genotypes and climatic zones. The core-microbiome analysis revealed an association of Acidovorax, Arthrobacter, Bacillus, Clavibacter, Clostridium, Cronobacter, Curtobacterium, Deinococcus, Erwinia, Exiguobacterium, Hymenobacter, Kineococcus, Klebsiella, Methylobacterium, Methylocella, Microbacterium, Nocardioides, Pantoea, Pedobacter, Pseudomonas, Salmonella, Serratia, Sphingomonas and Streptomyces on phyllosphere. The linear discriminant analysis (LDA) effect size (LEfSe) method revealed distinct bacterial genera in blast-resistant and susceptible genotypes, as well as mountain and island climate zones. SparCC based network analysis of phyllomicrobiome showed complex intra-microbial cooperative or competitive interactions on the rice genotypes. The culturomic validation of mNGS data confirmed the occurrence of Acinetobacter, Aureimonas, Curtobacterium, Enterobacter, Exiguobacterium, Microbacterium, Pantoea, Pseudomonas, and Sphingomonas in the phyllosphere. Strikingly, the contrasting agroclimatic zones showed genetically identical bacterial isolates suggestive of vertical microbiome transmission. The core-phyllobacterial communities showed secreted and volatile compound mediated antifungal activity on M. oryzae. Upon phyllobacterization (a term coined for spraying bacterial cells on the phyllosphere), Acinetobacter, Aureimonas, Pantoea, and Pseudomonas conferred immunocompetence against blast disease. Transcriptional analysis revealed activation of defense genes such as OsPR1.1, OsNPR1, OsPDF2.2, OsFMO, OsPAD4, OsCEBiP, and OsCERK1 in phyllobacterized rice seedlings. CONCLUSIONS PCoA indicated the key role of agro-climatic zones to drive phyllomicrobiome assembly on the rice genotypes. The mNGS and culturomic methods showed Acinetobacter, Aureimonas, Curtobacterium, Enterobacter, Exiguobacterium, Microbacterium, Pantoea, Pseudomonas, and Sphingomonas as core phyllomicrobiome of rice. Genetically identical Pantoea intercepted on the phyllosphere from the well-separated agroclimatic zones is suggestive of vertical transmission of phyllomicrobiome. The phyllobacterization showed potential for blast disease suppression by direct antibiosis and defense elicitation. Identification of functional core-bacterial communities on the phyllosphere and their co-occurrence dynamics presents an opportunity to devise novel strategies for rice blast management through phyllomicrobiome reengineering in the future.
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Affiliation(s)
- Kuleshwar Prasad Sahu
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
| | - A Kumar
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India.
| | - K Sakthivel
- Division of Field Crop Improvement and Protection, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, 744101, India
| | - Bhaskar Reddy
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Mukesh Kumar
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Asharani Patel
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Neelam Sheoran
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
| | | | - Ganesan Prakash
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Rajeev Rathour
- Department of Agricultural Biotechnology, CSK Himachal Pradesh Agricultural University, Palampur, Himachal Pradesh, 176062, India
| | - R K Gautam
- Division of Field Crop Improvement and Protection, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, 744101, India
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Sahu KP, Kumar A, Patel A, Kumar M, Gopalakrishnan S, Prakash G, Rathour R, Gogoi R. Rice Blast Lesions: an Unexplored Phyllosphere Microhabitat for Novel Antagonistic Bacterial Species Against Magnaporthe oryzae. Microb Ecol 2021; 81:731-745. [PMID: 33108474 DOI: 10.1007/s00248-020-01617-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 10/05/2020] [Indexed: 05/28/2023]
Abstract
Dark brown necrotic lesions caused by Magnaporthe oryzae on rice foliage is a contrasting microhabitat for leaf-colonizing microbiome as compared with the surrounding healthy chlorophyll-rich tissues. We explored culturable bacterial communities of blast lesions by adopting microbiological tools for isolating effective biocontrol bacterial strains against M. oryzae. 16S rRNA gene sequencing-based molecular identification revealed a total of 17 bacterial species belonging to Achromobacter (2), Comamonas (1), Curtobacterium (1), Enterobacter (1), Leclercia (2), Microbacterium (1), Pantoea (3), Sphingobacterium (1), and Stenotrophomonas (5) found colonizing the lesion. Over 50% of the bacterial isolates were able to suppress the mycelial growth of M. oryzae either by secretory or volatile metabolites. Volatiles released by Achromobacter sp., Curtobacterium luteum, Microbacterium oleivorans, Pantoea ananatis, Stenotrophomonas maltophilia, and Stenotrophomonas sp., and were found to be fungicidal while others showed fungistatic action. In planta pathogen challenged evaluation trial revealed the biocontrol potential of Stenotrophomonas sp. and Microbacterium oleivorans that showed over 60% blast severity suppression on the rice leaf. The lesion-associated bacterial isolates were found to trigger expression of defense genes such as OsCEBiP, OsCERK1, OsEDS1, and OsPAD4 indicating their capability to elicit innate defense in rice against blast disease. The investigation culminated in the identification of potential biocontrol agents for the management of rice blast disease.
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Affiliation(s)
- Kuleshwar Prasad Sahu
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Aundy Kumar
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India.
| | - Asharani Patel
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Mukesh Kumar
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
| | - S Gopalakrishnan
- Division of Genetics, ICAR -Indian Agricultural Research Institute, New Delhi, 110012, India
| | - G Prakash
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
| | - R Rathour
- Department of Agricultural Biotechnology, CSK Himachal Pradesh Agricultural University, Palampur, Himachal Pradesh, 176062, India
| | - Robin Gogoi
- Division of Plant Pathology, ICAR - Indian Agricultural Research Institute, New Delhi, 110012, India
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9
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Kumar M, Kumar A, Sahu KP, Patel A, Reddy B, Sheoran N, Krishnappa C, Rajashekara H, Bhagat S, Rathour R. Deciphering core-microbiome of rice leaf endosphere: Revelation by metagenomic and microbiological analysis of aromatic and non-aromatic genotypes grown in three geographical zones. Microbiol Res 2021; 246:126704. [PMID: 33486428 DOI: 10.1016/j.micres.2021.126704] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 11/20/2020] [Accepted: 01/06/2021] [Indexed: 11/16/2022]
Abstract
We have deciphered the leaf endophytic-microbiome of aromatic (cv. Pusa Basmati-1) and non-aromatic (cv. BPT-5204) rice-genotypes grown in the mountain and plateau-zones of India by both metagenomic NGS (mNGS) and conventional microbiological methods. Microbiome analysis by sequencing V3-V4 region of ribosomal gene revealed marginally more bacterial operational taxonomic units (OTU) in the mountain zone at Palampur and Almora than plateau zone at Hazaribagh. Interestingly, the rice leaf endophytic microbiomes in mountain zone were found clustered separately from that of plateau-zone. The Bray-Curtis dissimilarity indices indicated influence of geographical location as compared to genotype per se for shaping rice endophytic microbiome composition. Bacterial phyla, Proteobacteria followed by Bacteroidetes, Firmicutes, and Actinobacteria were found abundant in all three locations. The core-microbiome analysis devulged association of Acidovorax; Acinetobacter; Allorhizobium-Neorhizobium-Pararhizobium-Rhizobium; Aureimonas; Bradyrhizobium; Burkholderia-Caballeronia-Paraburkholderia; Enterobacter; Pantoea; Pseudomonas; Sphingomonas; and Stenotrophomonas with the leaf endosphere. The phyllosphere and spermosphere microbiota appears to have contributed to endophytic microbiota of rice leaf. SparCC network analysis of the endophytic-microbiome showed complex cooperative and competitive intra-microbial interactions among the microbial communities. Microbiological validation of mNGS data further confirmed the presence of core and transient genera such as Acidovorax, Alcaligenes, Bacillus, Chryseobacterium, Comamonas, Curtobacterium, Delftia, Microbacterium, Ochrobactrum, Pantoea, Pseudomonas, Rhizobium, Rhodococcus, Sphingobacterium, Staphylococcus, Stenotrophomonas, and Xanthomonas in the rice genotypes. We isolated, characterized and identified core-endophytic microbial communities of rice leaf for developing microbiome assisted crop management by microbiome reengineering in future.
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Affiliation(s)
- Mukesh Kumar
- ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Aundy Kumar
- ICAR-Indian Agricultural Research Institute, New Delhi, India.
| | | | - Asharani Patel
- ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Bhaskar Reddy
- ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Neelam Sheoran
- ICAR-Indian Agricultural Research Institute, New Delhi, India
| | | | | | - Someshwar Bhagat
- ICAR-Central Rainfed Upland Rice Research Station (NRRI), Hazaribagh, Jharkhand, India
| | - Rajeev Rathour
- CSK-Himachal Pradesh Agricultural University, Palampur, Himachal Pradesh, India
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10
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Raina M, Salgotra RK, Pandotra P, Rathour R, Singh K. Genetic enhancement for semi-dwarf and bacterial blight resistance with enhanced grain quality characteristics in traditional Basmati rice through marker-assisted selection. C R Biol 2019; 342:142-153. [PMID: 31447175 DOI: 10.1016/j.crvi.2019.04.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 04/30/2019] [Accepted: 04/30/2019] [Indexed: 12/01/2022]
Abstract
Ranbir Basmati is one of the traditional Basmati varieties of India and of the most popular traditional Basmati variety grown in Jammu's region (State of Jammu & Kashmir). It is a tall and short-duration variety with strong aroma and excellent cooking quality. However, it is susceptible to bacterial blight (BB) disease caused by Xanthomonas oryzae pv oryzae (Xoo) and prone to lodging. In this study, semi-dwarf (sd1) and BB resistance genes (Xa21 and xa13) were introgressed into Ranbir Basmati using marker-assisted backcross breeding (MABB) scheme. A high-yielding PAU148 carrying Xa21, xa13 and sd1 genes was used as a donor parent. On each generation target, genes were selected, while polymorphic SSR markers were used to select plants having maximum recovery of the recurrent genome. The maximum genome recovery of Ranbir Basmati in BC2F2 was 86.9% in introgressed line SBTIL121. The genotypes carrying resistant genes exhibited very high levels of tolerance against BB disease along with good Basmati rice grain quality traits. The agronomic traits of introgressed lines evaluated in the field and the laboratory showed that most of the agro-morphological traits were similar or superior to Ranbir Basmati. The identified lines can be further evaluated and released as Improved Ranbir Basmati variety.
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Affiliation(s)
- Meenakshi Raina
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences & Technology of Jammu, Chatha, Jammu 180009 (Jammu & Kashmir), India
| | - Romesh Kumar Salgotra
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences & Technology of Jammu, Chatha, Jammu 180009 (Jammu & Kashmir), India.
| | - Pankaj Pandotra
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences & Technology of Jammu, Chatha, Jammu 180009 (Jammu & Kashmir), India
| | - Rajeev Rathour
- Department of Biotechnology, CSK Himachal Pradesh Agriculture University, Palampur 176062, Himachal Pradesh, India
| | - Kuldeep Singh
- National Bureau of Plant Genetic Resources (NBPGR), Pusa Campus, New Delhi 110012, India
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11
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Kalia S, Rathour R. Current status on mapping of genes for resistance to leaf- and neck-blast disease in rice. 3 Biotech 2019; 9:209. [PMID: 31093479 PMCID: PMC6509304 DOI: 10.1007/s13205-019-1738-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Accepted: 04/29/2019] [Indexed: 12/15/2022] Open
Abstract
Blast disease caused by fungal pathogen Pyricularia oryzae is a major threat to rice productivity worldwide. The rice-blast pathogen can infect both leaves and panicle neck nodes. Nearly, 118 genes for resistance to leaf blast have been identified and 25 of these have been molecularly characterized. A great majority of these genes encode nucleotide-binding site-leucine-rich repeat (NBS-LRR) proteins and are organized into clusters as allelic or tightly linked genes. Compared to ever expanding list of leaf-blast-resistance genes, a few major genes mediating protection to neck blast have been identified. A great majority of the genetic studies conducted with the genotypes differing in the degree of susceptibility/resistance to neck blast have suggested quantitative inheritance for the trait. Several reports on co-localization of gene/QTLs for leaf- and neck-blast resistance in rice genome have suggested the existence of common genes for resistance to both phases of the disease albeit inconsistencies in the genomic positions leaf- and neck-blast-resistance genes in some instances have presented the contrasting scenario. There is a strong evidence to suggest that developmentally regulated expression of many blast-resistance genes is a key determinant deciding their effectiveness against leaf or neck blast. Testing of currently characterized leaf-blast-resistance genes for their reaction to neck blast is required to expand the existing repertoire resistance genes against neck blast. Current developments in the understanding of molecular basis of host-pathogen interactions in rice-blast pathosystem offer novel possibilities for achieving durable resistance to blast through exploitation of natural or genetically engineered loss-of-function alleles of host susceptibility genes.
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Affiliation(s)
- S. Kalia
- Department of Agricultural Biotechnology, CSK Himachal Pradesh Agricultural University, Palampur, Himachal Pradesh 176062 India
| | - R. Rathour
- Department of Agricultural Biotechnology, CSK Himachal Pradesh Agricultural University, Palampur, Himachal Pradesh 176062 India
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12
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Singh PK, Mahato AK, Jain P, Rathour R, Sharma V, Sharma TR. Comparative Genomics Reveals the High Copy Number Variation of a Retro Transposon in Different Magnaporthe Isolates. Front Microbiol 2019; 10:966. [PMID: 31134015 PMCID: PMC6512758 DOI: 10.3389/fmicb.2019.00966] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 04/16/2019] [Indexed: 01/02/2023] Open
Abstract
Magnaporthe oryzae is one of the fungal pathogens of rice which results in heavy yield losses worldwide. Understanding the genomic structure of M. oryzae is essential for appropriate deployment of the blast resistance in rice crop improvement programs. In this study we sequenced two M. oryzae isolates, RML-29 (avirulent) and RP-2421 (highly virulent) and performed comparative study along with three publically available genomes of 70-15, P131, and Y34. We identified several candidate effectors (>600) and isolate specific sequences from RML-29 and RP-2421, while a core set of 10013 single copy orthologs were found among the isolates. Pan-genome analysis showed extensive presence and absence variations (PAVs). We identified isolate-specific genes across 12 isolates using the pan-genome information. Repeat analysis was separately performed for each of the 15 isolates. This analysis revealed ∼25 times higher copy number of short interspersed nuclear elements (SINE) in virulent than avirulent isolate. We conclude that the extensive PAVs and occurrence of SINE throughout the genome could be one of the major mechanisms by which pathogenic variability is emerging in M. oryzae isolates. The knowledge gained in this comparative genome study can provide understandings about the fungal genome variations in different hosts and environmental conditions, and it will provide resources to effectively manage this important disease of rice.
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Affiliation(s)
- Pankaj Kumar Singh
- Indian Council of Agricultural Research (ICAR)-National Research Centre on Plant Biotechnology, New Delhi, India
- Department of Bioscience and Biotechnology, Banasthali University, Tonk, India
| | - Ajay Kumar Mahato
- Indian Council of Agricultural Research (ICAR)-National Research Centre on Plant Biotechnology, New Delhi, India
| | - Priyanka Jain
- Indian Council of Agricultural Research (ICAR)-National Research Centre on Plant Biotechnology, New Delhi, India
- Department of Bioscience and Biotechnology, Banasthali University, Tonk, India
| | - Rajeev Rathour
- Department of Agricultural Biotechnology, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya (CSK HPKV), Palampur, India
| | - Vinay Sharma
- Department of Bioscience and Biotechnology, Banasthali University, Tonk, India
| | - Tilak Raj Sharma
- Indian Council of Agricultural Research (ICAR)-National Research Centre on Plant Biotechnology, New Delhi, India
- National Agri-Food Biotechnology Institute, Mohali, India
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13
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Singh PK, Ray S, Thakur S, Rathour R, Sharma V, Sharma TR. Co-evolutionary interactions between host resistance and pathogen avirulence genes in rice-Magnaporthe oryzae pathosystem. Fungal Genet Biol 2018; 115:9-19. [PMID: 29630984 DOI: 10.1016/j.fgb.2018.04.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 04/03/2018] [Accepted: 04/05/2018] [Indexed: 11/29/2022]
Abstract
Rice and Magnaporthe oryzae constitutes an ideal pathosystem for studying host-pathogen interaction in cereals crops. There are two alternative hypotheses, viz. Arms race and Trench warfare, which explain the co-evolutionary dynamics of hosts and pathogens which are under continuous confrontation. Arms race proposes that both R- and Avr- genes of host and pathogen, respectively, undergo positive selection. Alternatively, trench warfare suggests that either R- or Avr- gene in the pathosystem is under balanced selection intending to stabilize the genetic advantage gained over the opposition. Here, we made an attempt to test the above-stated hypotheses in rice-M. oryzae pathosystem at loci of three R-Avr gene pairs, Piz-t-AvrPiz-t, Pi54-AvrPi54 and Pita-AvrPita using allele mining approach. Allele mining is an efficient way to capture allelic variants existing in the population and to study the selective forces imposed on the variants during evolution. Results of nucleotide diversity, neutrality statistics and phylogenetic analyses reveal that Piz-t, Pi54 and AvrPita are diversified and under positive selection at their corresponding loci, while their counterparts, AvrPiz-t, AvrPi54 and Pita are conserved and under balancing selection, in nature. These results imply that rice-M. oryzae populations are engaged in a trench warfare at least at the three R/Avr loci studied. It is a maiden attempt to study the co-evolution of three R-Avr gene pairs in this pathosystem. Knowledge gained from this study will help in understanding the evolutionary dynamics of host-pathogen interaction in a better way and will also aid in developing new durable blast resistant rice varieties in future.
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Affiliation(s)
- Pankaj Kumar Singh
- National Research Centre on Plant Biotechnology, New Delhi 110 012, India; Department of Bioscience and Biotechnology, Banasthali University, Tonk, Rajasthan 304 022, India
| | - Soham Ray
- National Research Centre on Plant Biotechnology, New Delhi 110 012, India
| | - Shallu Thakur
- National Research Centre on Plant Biotechnology, New Delhi 110 012, India
| | - Rajeev Rathour
- Department of Agricultural Biotechnology, CSK HPKV, Palampur, H.P. 176 062, India
| | - Vinay Sharma
- Department of Bioscience and Biotechnology, Banasthali University, Tonk, Rajasthan 304 022, India
| | - Tilak Raj Sharma
- National Research Centre on Plant Biotechnology, New Delhi 110 012, India; National Agri-Food Biotechnology Institute, Mohali, Punjab 140 306, India.
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14
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Ray S, Singh PK, Gupta DK, Mahato AK, Sarkar C, Rathour R, Singh NK, Sharma TR. Analysis of Magnaporthe oryzae Genome Reveals a Fungal Effector, Which Is Able to Induce Resistance Response in Transgenic Rice Line Containing Resistance Gene, Pi54. Front Plant Sci 2016; 7:1140. [PMID: 27551285 PMCID: PMC4976503 DOI: 10.3389/fpls.2016.01140] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 07/18/2016] [Indexed: 05/04/2023]
Abstract
Rice blast caused by Magnaporthe oryzae is one of the most important diseases of rice. Pi54, a rice gene that imparts resistance to M. oryzae isolates prevalent in India, was already cloned but its avirulent counterpart in the pathogen was not known. After decoding the whole genome of an avirulent isolate of M. oryzae, we predicted 11440 protein coding genes and then identified four candidate effector proteins which are exclusively expressed in the infectious structure, appresoria. In silico protein modeling followed by interaction analysis between Pi54 protein model and selected four candidate effector proteins models revealed that Mo-01947_9 protein model encoded by a gene located at chromosome 4 of M. oryzae, interacted best at the Leucine Rich Repeat domain of Pi54 protein model. Yeast-two-hybrid analysis showed that Mo-01947_9 protein physically interacts with Pi54 protein. Nicotiana benthamiana leaf infiltration assay confirmed induction of hypersensitive response in the presence of Pi54 gene in a heterologous system. Genetic complementation test also proved that Mo-01947_9 protein induces avirulence response in the pathogen in presence of Pi54 gene. Here, we report identification and cloning of a new fungal effector gene which interacts with blast resistance gene Pi54 in rice.
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Affiliation(s)
- Soham Ray
- National Research Centre on Plant Biotechnology, Pusa CampusNew Delhi, India
| | - Pankaj K. Singh
- National Research Centre on Plant Biotechnology, Pusa CampusNew Delhi, India
| | - Deepak K. Gupta
- National Research Centre on Plant Biotechnology, Pusa CampusNew Delhi, India
| | - Ajay K. Mahato
- National Research Centre on Plant Biotechnology, Pusa CampusNew Delhi, India
| | - Chiranjib Sarkar
- National Research Centre on Plant Biotechnology, Pusa CampusNew Delhi, India
| | - Rajeev Rathour
- Chaudhary Sarwan Kumar Himachal Pradesh Agricultural UniversityPalampur, India
| | - Nagendra K. Singh
- National Research Centre on Plant Biotechnology, Pusa CampusNew Delhi, India
| | - Tilak R. Sharma
- National Research Centre on Plant Biotechnology, Pusa CampusNew Delhi, India
- *Correspondence: Tilak R. Sharma,
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15
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Khanna A, Sharma V, Ellur RK, Shikari AB, Gopala Krishnan S, Singh UD, Prakash G, Sharma TR, Rathour R, Variar M, Prashanthi SK, Nagarajan M, Vinod KK, Bhowmick PK, Singh NK, Prabhu KV, Singh BD, Singh AK. Development and evaluation of near-isogenic lines for major blast resistance gene(s) in Basmati rice. Theor Appl Genet 2015; 128:1243-59. [PMID: 25869921 DOI: 10.1007/s00122-015-2502-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 03/20/2015] [Indexed: 05/03/2023]
Abstract
A set of NILs carrying major blast resistance genes in a Basmati rice variety has been developed. Also, the efficacy of pyramids over monogenic NILs against rice blast pathogen Magnaporthe oryzae has been demonstrated. Productivity and quality of Basmati rice is severely affected by rice blast disease. Major genes and QTLs conferring resistance to blast have been reported only in non-Basmati rice germplasm. Here, we report incorporation of seven blast resistance genes from the donor lines DHMASQ164-2a (Pi54, Pi1, Pita), IRBLz5-CA (Pi2), IRBLb-B (Pib), IRBL5-M (Pi5) and IRBL9-W (Pi9) into the genetic background of an elite Basmati rice variety Pusa Basmati 1 (PB1). A total of 36 near-isogenic lines (NILs) comprising of 14 monogenic, 16 two-gene pyramids and six three-gene pyramids were developed through marker-assisted backcross breeding (MABB). Foreground, recombinant and background selection was used to identify the plants with target gene(s), minimize the linkage drag and increase the recurrent parent genome (RPG) recovery (93.5-98.6 %), respectively, in the NILs. Comparative analysis performed using 50,051 SNPs and 500 SSR markers revealed that the SNPs provided better insight into the RPG recovery. Most of the monogenic NILs showed comparable performance in yield and quality, concomitantly, Pusa1637-18-7-6-20 (Pi9), was significantly superior in yield and stable across four different environments as compared to recurrent parent (RP) PB1. Further, among the pyramids, Pusa1930-12-6 (Pi2+Pi5) showed significantly higher yield and Pusa1633-7-8-53-6-8 (Pi54+Pi1+Pita) was superior in cooking quality as compared to RP PB1. The NILs carrying gene Pi9 were found to be the most effective against the concoction of virulent races predominant in the hotspot locations for blast disease. Conversely, when analyzed under artificial inoculation, three-gene pyramids expressed enhanced resistance as compared to the two-gene and monogenic NILs.
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Affiliation(s)
- Apurva Khanna
- Division of Genetics, Indian Agricultural Research Institute, New Delhi, 110012, India
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Thakur S, Singh PK, Das A, Rathour R, Variar M, Prashanthi SK, Singh AK, Singh UD, Chand D, Singh NK, Sharma TR. Extensive sequence variation in rice blast resistance gene Pi54 makes it broad spectrum in nature. Front Plant Sci 2015; 6:345. [PMID: 26052332 PMCID: PMC4440361 DOI: 10.3389/fpls.2015.00345] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 04/30/2015] [Indexed: 05/04/2023]
Abstract
Rice blast resistant gene, Pi54 cloned from rice line, Tetep, is effective against diverse isolates of Magnaporthe oryzae. In this study, we prospected the allelic variants of the dominant blast resistance gene from a set of 92 rice lines to determine the nucleotide diversity, pattern of its molecular evolution, phylogenetic relationships and evolutionary dynamics, and to develop allele specific markers. High quality sequences were generated for homologs of Pi54 gene. Using comparative sequence analysis, InDels of variable sizes in all the alleles were observed. Profiling of the selected sites of SNP (Single Nucleotide Polymorphism) and amino acids (N sites ≥ 10) exhibited constant frequency distribution of mutational and substitutional sites between the resistance and susceptible rice lines, respectively. A total of 50 new haplotypes based on the nucleotide polymorphism was also identified. A unique haplotype (H_3) was found to be linked to all the resistant alleles isolated from indica rice lines. Unique leucine zipper and tyrosine sulfation sites were identified in the predicted Pi54 proteins. Selection signals were observed in entire coding sequence of resistance alleles, as compared to LRR domains for susceptible alleles. This is a maiden report of extensive variability of Pi54 alleles in different landraces and cultivated varieties, possibly, attributing broad-spectrum resistance to Magnaporthe oryzae. The sequence variation in two consensus region: 163 and 144 bp were used for the development of allele specific DNA markers. Validated markers can be used for the selection and identification of better allele(s) and their introgression in commercial rice cultivars employing marker assisted selection.
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Affiliation(s)
- Shallu Thakur
- National Research Centre on Plant Biotechnology, Pusa CampusNew Delhi, India
- Department of Biotechnology, Himachal Pradesh UniversityShimla, India
| | - Pankaj K. Singh
- National Research Centre on Plant Biotechnology, Pusa CampusNew Delhi, India
| | - Alok Das
- National Research Centre on Plant Biotechnology, Pusa CampusNew Delhi, India
| | - R. Rathour
- Department of Agricultural Biotechnology, CSK Himachal Pradesh Agricultural UniversityPalampur, India
| | - M. Variar
- Central Rainfed Upland Rice Research Station, Central Rice Research InstituteHazaribagh, India
| | - S. K. Prashanthi
- School of Agricultural Biotechnology, University of Agricultural SciencesDharwad, India
| | - A. K. Singh
- Indian Agricultural Research InstituteNew Delhi, India
| | - U. D. Singh
- Indian Agricultural Research InstituteNew Delhi, India
| | - Duni Chand
- Department of Biotechnology, Himachal Pradesh UniversityShimla, India
| | - N. K. Singh
- National Research Centre on Plant Biotechnology, Pusa CampusNew Delhi, India
| | - Tilak R. Sharma
- National Research Centre on Plant Biotechnology, Pusa CampusNew Delhi, India
- *Correspondence: Tilak R. Sharma, National Research Centre on Plant Biotechnology, Pusa Campus, LBS Building, New Delhi-110012, India ;
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Sharma KD, Bindal G, Rathour R, Rana JC. β-Carotene and mineral content of different Chenopodium species and the effect of cooking on micronutrient retention. Int J Food Sci Nutr 2011; 63:290-5. [PMID: 21981021 DOI: 10.3109/09637486.2011.624493] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In the present study, the β-carotene, calcium, iron and zinc content in the leaves of 46 accessions of three Chenopodium species viz. Chenopodium album, C. album ssp. amaranticolor and Chenopodium quinoa was investigated. A wide range of variability, inter-specific as well as varietal, for the β-carotene [0.19-5.91 mg 100 g(- 1) fresh weight (FW)], calcium (358.35-960.10 mg 100 g(- 1) FW), iron (0.56-7.90 mg 100 g(- 1) FW) and zinc content (0.07-4.26 mg 100 g(- 1) FW) was observed. The C. album ssp. amaranticolor accessions IC341710 and IC469275 had a high content of all the four nutrients and were ideal food to alleviate nutritional deficiencies in humans. Nutritionally rich IC341710 and IC469275 were further studied to estimate micronutrient retention in cooked leaves. Between the two methods used to cook leaves, stir-frying showed better retention of micronutrients than pressure cooking.
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Affiliation(s)
- Kamal Dev Sharma
- Department of Agricultural Biotechnology, CSK Himachal Pradesh Agricultural University, Palampur 176062, Himachal Pradesh, India.
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Maurya RC, Mishra DD, Pandey M, Shukla P, Rathour R. Synthesis and Spectral Studies of Octacoordinated Dioxouranium(VI) Complexes with Some Schiff Bases Derived from 4-Acetyl-2,3-Dimethyl-l-(4-Methylphenyl)-3-Pyrazoline-5-One and Aromatic Amines. ACTA ACUST UNITED AC 1993. [DOI: 10.1080/15533179308016625] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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