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Mayakaduwa R, Silva T. Haploid Induction in Indica Rice: Exploring New Opportunities. PLANTS (BASEL, SWITZERLAND) 2023; 12:3118. [PMID: 37687363 PMCID: PMC10490219 DOI: 10.3390/plants12173118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 08/25/2023] [Accepted: 08/27/2023] [Indexed: 09/10/2023]
Abstract
Haploid plants are of significant interest to crop breeders due to their ability to expedite the development of inbred lines. Chromosome-doubling of haploids, produced by either in vitro or in vivo methods, results in fully homozygous doubled haploids. For nearly five decades, in vitro methods of anther and microspore culture have been attempted in many crops. In rice, in vitro methods are used with some success in japonica cultivars, although indica types have remained recalcitrant to a large extent. This review aims to explore the reasons for the lack of success of in vitro methods in indica rice and discuss new advancements in in vivo haploid induction protocols in other cereals and their relevance to rice. In particular, the current level of understanding of in vivo haploid inducer systems that utilize MTL and CENH3 mutants is analyzed in detail. One notable advantage of in vivo haploid induction systems is that they do not require tissue culture competence. This makes these methods more accessible and potentially transformative for research, offering a pragmatic approach to improving indica rice cultivars. By embracing these in vivo methods and harnessing the power of gene editing technologies like CRISPR/Cas9 systems, breeders can reshape their approach to indica rice improvement.
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Affiliation(s)
| | - Tara Silva
- Department of Plant Sciences, University of Colombo, Colombo 00300, Sri Lanka;
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Dash B, Bhuyan SS, Singh SK, Chandravani M, Swain N, Rout P, Katara JL, C. P, B. N. D, Samantaray S. Androgenesis in indica rice: A comparative competency in development of doubled haploids. PLoS One 2022; 17:e0267442. [PMID: 35511909 PMCID: PMC9071166 DOI: 10.1371/journal.pone.0267442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 04/09/2022] [Indexed: 12/02/2022] Open
Abstract
Rice is critical to global food security which demands immediate attention to meet the ever-growing population. Development of improved variety is the major focus area of research, in which doubled haploid (DH) technology plays a vital role. Since, androgenesis shows its potential in DH production, this method was not capitalized specially in indica rice due to due to its recalcitrant nature to tissue culture. Success of androgenesis is governed by many important factors such as stage of anther, pre-treatment conditions, accurate concentrations of media, and plant growth regulators. Though reports of androgenesis are abundant in rice, most of them either used japonica or a specific cultivar of indica rice ecotypes. In this study, a media combination was established which is successful in producing doubled haploids from F1s of Savitri x Pokkali, IR20 x Mahulata along with the popular indica hybrids of Arize 8433DT, Arize 6453, Arize Bold, and Swift Gold. Out of 12 different media combinations tested, and 5 different durations of cold-treatments studied, N6 media with 2,4-D (2.0 mg/l) and BAP (0.5 mg/l) with 7th day cold pre-treatment was found to be most effective in all of the F1s for callus induction. Among all the F1s, rice hybrid, Arize 8433DT showed highest of 52% callus induction. In case of green shoot regeneration, MS media with NAA (0.5 mg/l), BAP (2.0 mg/l) and Kn (1.0 mg/l) (MS+C4) was found to be the most efficient of six treatments studied with highest of 58.25% regeneration in Arize 8433DT. Further, MS+C4 in combination with proline (5.0 mg/l) increased the regeneration rate to 85.99%. Besides, MS media with NAA (1.0 mg/l), Kn (0.1 mg/l) and 50 g/l sucrose was found to be most efficient for supporting root induction in all F1s. This study claims the establishment of genotype independent androgenic protocol for indica rice which could be capitalized in indica rice improvement.
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Affiliation(s)
- Byomkesh Dash
- Crop Improvement Division, ICAR-National Rice Research Institute, Cuttack, Odisha, India
| | - Sudhansu Sekhar Bhuyan
- Crop Improvement Division, ICAR-National Rice Research Institute, Cuttack, Odisha, India
| | - Sandeep Kumar Singh
- Crop Improvement Division, ICAR-National Rice Research Institute, Cuttack, Odisha, India
- Department of Plant Breeding and Genetics, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, India
| | - Manjusha Chandravani
- Crop Improvement Division, ICAR-National Rice Research Institute, Cuttack, Odisha, India
| | - Nibedita Swain
- Crop Improvement Division, ICAR-National Rice Research Institute, Cuttack, Odisha, India
| | - Prachitara Rout
- Crop Improvement Division, ICAR-National Rice Research Institute, Cuttack, Odisha, India
| | - Jawahar Lal Katara
- Crop Improvement Division, ICAR-National Rice Research Institute, Cuttack, Odisha, India
| | - Parameswaran C.
- Crop Improvement Division, ICAR-National Rice Research Institute, Cuttack, Odisha, India
| | - Devanna B. N.
- Crop Improvement Division, ICAR-National Rice Research Institute, Cuttack, Odisha, India
| | - Sanghamitra Samantaray
- Crop Improvement Division, ICAR-National Rice Research Institute, Cuttack, Odisha, India
- * E-mail:
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Ferreres I, Ortega M, López-Cristoffanini C, Nogués S, Serrat X. Colchicine and osmotic stress for improving anther culture efficiency on long grain temperate and tropical japonica rice genotypes. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2019; 36:269-273. [PMID: 31983881 PMCID: PMC6978504 DOI: 10.5511/plantbiotechnology.19.1022a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 10/22/2019] [Indexed: 05/27/2023]
Abstract
Anther culture is a fast tool to obtain double haploid plant lines for breeding purposes. In rice, this procedure is commonly performed in two steps: i) induction of calli from anthers and ii) regeneration of plantlets from calli. It has been stated that genotype highly influences the anther culture efficiency, so the media used in each step should be optimized for each variety. In this study, we tested different media modifications of an efficient protocol optimized for a medium sized grain temperate japonica NRVC980385, used as a control, in a long grain temperate japonica rice variety (NRVC20120346), and two long grain tropical japonica varieties (303012 and 303013). We found that the addition of 150 mg l-1 colchicine to the induction medium worked best for all genotypes except for NRVC20120346, whose best induction was obtained with the colchicine-free medium. Referring to regeneration, increased gelling agent in the medium provided the best rates in NRVC980385, improving our former NRVC980385-optimized anther culture protocol. Sorbitol fortified regeneration medium worked the best in the case of the long grain varieties. The presence of colchicine in the induction medium was also related to a higher obtention of double haploid plantlets. This study highlights that genotype is a key factor in the performance of rice anther culture. It has set a first anther culture study on long grain japonica varieties and optimizes the anther culture protocol for temperate japonica medium grain NRVC980385 with the use of colchicine and other additives that increase osmotic stress.
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Affiliation(s)
- Irene Ferreres
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
| | - Mirari Ortega
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
| | - Camilo López-Cristoffanini
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
| | - Salvador Nogués
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
| | - Xavier Serrat
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
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Panigrahi R, Kariali E, Panda BB, Lafarge T, Mohapatra PK. Controlling the trade-off between spikelet number and grain filling: the hierarchy of starch synthesis in spikelets of rice panicle in relation to hormone dynamics. FUNCTIONAL PLANT BIOLOGY : FPB 2019; 46:507-523. [PMID: 30961785 DOI: 10.1071/fp18153] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 02/13/2019] [Indexed: 06/09/2023]
Abstract
The advent of dwarf statured rice varieties enabled a major breakthrough in yield and production, but raising the ceiling of genetically determined yield potential even further has been the breeding priority. Grain filling is asynchronous in the rice panicle; the inferior spikelets particularly on secondary branches of the basal part do not produce grains of a quality suitable for human consumption. Of the various strategies being considered, the control of ethylene production at anthesis has been a valuable route to potentially enhance genetic yield level of rice. The physiology underlying spikelet development has revealed spikelet position-specific ethylene levels determine the extent of grain filling, with higher levels resulting in ill-developed spikelet embodying poor endosperm starch content. To break the yield barrier, breeders have increased spikelet number per panicle in new large-panicle rice plants. However, the advantage of panicles with numerous spikelets has not resulted in enhanced yield because of poor filling of inferior spikelets. High spikelet number stimulates ethylene production and downgrading of starch synthesis, suggesting a trade-off between spikelet number and grain filling. High ethylene production in inferior spikelets suppresses expression of genes encoding endosperm starch synthesising enzymes. Hence, ethylene could be a retrograde signal that dictates the transcriptome dynamics for the cross talk between spikelet number and grain filling in the rice panicle, so attenuation of its activity may provide a solution to the problem of poor grain filling in large-panicle rice. This physiological linkage that reduces starch biosynthesis of inferior kernels is not genetically constitutive and amenable for modification through chemical, biotechnological, surgical and allelic manipulations. Studies on plant genotypes with different panicle architecture have opened up possibilities of selectively improving starch biosynthesis of inferior spikelets and thereby increasing grain yield through a physiological route.
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Affiliation(s)
- Rashmi Panigrahi
- School of Life Sciences, Sambalpur University, Jyoti vihar, Sambalpur, 768019, India
| | - Ekamber Kariali
- School of Life Sciences, Sambalpur University, Jyoti vihar, Sambalpur, 768019, India
| | - Binay Bhusan Panda
- Environmental Biotechnology Laboratory, Institute of Life Science, Bhubaneswar, 751023, India
| | - Tanguy Lafarge
- CIRAD, UMR AGAP, F-34398 Montpellier, France; and AGAP, University of Montpellier, CIRAD, INRA, INRIA, Montpellier SupAgro, Montpellier, France
| | - Pravat Kumar Mohapatra
- School of Life Sciences, Sambalpur University, Jyoti vihar, Sambalpur, 768019, India; and Corresponding author. Emails:
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Ali A, Xu P, Riaz A, Wu X. Current Advances in Molecular Mechanisms and Physiological Basis of Panicle Degeneration in Rice. Int J Mol Sci 2019; 20:ijms20071613. [PMID: 30939720 PMCID: PMC6479839 DOI: 10.3390/ijms20071613] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 03/27/2019] [Accepted: 03/28/2019] [Indexed: 12/22/2022] Open
Abstract
Panicle degeneration, also known as panicle abortion, is a serious defect and causes heavy losses to reproductive yield in cereals. Several mutants have been reported to display the phenotype of spikelet abortion in rice. Recent findings have resulted in significant breakthroughs, but comprehensive understanding about the molecular pathways and physiological basis of panicle degeneration still remain a dilemma. In this review, we have summarized all the responsible genes and mechanisms underlying the panicle development with a special focus on degeneration. Here, we hypothesized a model by using knowledge and coherent logic in order to understand the molecular regulation of panicle degeneration. In addition to this, we included all the previous discoveries, schools of thoughts, ancient working theories, and crosstalk of phytohormones and provided new insights for future studies.
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Affiliation(s)
- Asif Ali
- Key Laboratory of Crop Genetic Resources and Genetic Improvement, Ministry of Education, Institute of Rice Research, Sichuan Agricultural University, Chengdu 611130, China.
| | - Peizhou Xu
- Key Laboratory of Crop Genetic Resources and Genetic Improvement, Ministry of Education, Institute of Rice Research, Sichuan Agricultural University, Chengdu 611130, China.
| | - Asad Riaz
- Key Laboratory of Crop Genetic Resources and Genetic Improvement, Ministry of Education, Institute of Rice Research, Sichuan Agricultural University, Chengdu 611130, China.
| | - Xianjun Wu
- Key Laboratory of Crop Genetic Resources and Genetic Improvement, Ministry of Education, Institute of Rice Research, Sichuan Agricultural University, Chengdu 611130, China.
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Niroula R, Bimb H. Effect of Genotype and Callus Induction Medium on Green Plant Regeneration from Anther of Nepalese Rice Cultivars. ACTA ACUST UNITED AC 2009. [DOI: 10.3923/ajps.2009.368.374] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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