Time to flowering of temperate pulses in vivo and generation turnover in vivo–in vitro of narrow-leaf lupin accelerated by low red to far-red ratio and high intensity in the far-red region

Croser, Janine; Pazos-Navarro, María; Bennett, Richard G.; Tschirren, Sabrina; Edwards, Kylie; Erskine, William; Creasy, Robert; Ribalta, Federico M.

doi:10.1007/s11240-016-1092-4

Cited by 59 publications

(46 citation statements)

References 32 publications

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“…Light intensity and wavelength plays a key in the regulation of flowering [118,119]. Croser et al [120] developed early-and late-flowering genotypes for peas, chickpeas, faba beans, and lupins under controlled conditions using various parts of the light spectrum (blue and far red-improved LED lights and metal halide). These species showed a positive correlation to the diminishing red:far red-red proportion (R:FR).…”

Section: Speed Breeding (Time-saving Tools) For Accelerating Plant Brmentioning

confidence: 99%

Conventional and Molecular Techniques from Simple Breeding to Speed Breeding in Crop Plants: Recent Advances and Future Outlook

Ahmar

Gill

Jung

et al. 2020

IJMS

324

223

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In most crop breeding programs, the rate of yield increment is insufficient to cope with the increased food demand caused by a rapidly expanding global population. In plant breeding, the development of improved crop varieties is limited by the very long crop duration. Given the many phases of crossing, selection, and testing involved in the production of new plant varieties, it can take one or two decades to create a new cultivar. One possible way of alleviating food scarcity problems and increasing food security is to develop improved plant varieties rapidly. Traditional farming methods practiced since quite some time have decreased the genetic variability of crops. To improve agronomic traits associated with yield, quality, and resistance to biotic and abiotic stresses in crop plants, several conventional and molecular approaches have been used, including genetic selection, mutagenic breeding, somaclonal variations, whole-genome sequence-based approaches, physical maps, and functional genomic tools. However, recent advances in genome editing technology using programmable nucleases, clustered regularly interspaced short palindromic repeats (CRISPR), and CRISPR-associated (Cas) proteins have opened the door to a new plant breeding era. Therefore, to increase the efficiency of crop breeding, plant breeders and researchers around the world are using novel strategies such as speed breeding, genome editing tools, and high-throughput phenotyping. In this review, we summarize recent findings on several aspects of crop breeding to describe the evolution of plant breeding practices, from traditional to modern speed breeding combined with genome editing tools, which aim to produce crop generations with desired traits annually.

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Section: Speed Breeding (Time-saving Tools) For Accelerating Plant Brmentioning

confidence: 99%

Conventional and Molecular Techniques from Simple Breeding to Speed Breeding in Crop Plants: Recent Advances and Future Outlook

Ahmar

Gill

Jung

et al. 2020

IJMS

324

223

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show abstract

“…The generation time of most plant species represents a bottleneck in applied research programs and breeding, creating the need for technologies that accelerate plant development and generation turnover. Recently we reported protocols for 'speed breeding' (SB), which involve extending the photoperiod using supplementary lighting and temperature control, enabling rapid generation advancement in glasshouses with sodium vapour lamps (SVL) or growth chambers fitted with a mixture of metal halide and light-emitting diode (LED) 3,4 , pea (P. sativum), chickpea (C. arietinum), faba bean (Vicia faba), lupin (Lupinus angustifolius) 5 and clover (Trifolium subterraneum) 6 .…”

Section: Introductionmentioning

confidence: 99%

“…2 Days to 50% ear emergence from sowing (GS55). 3 Days to first flower opening from sowing. 4 Days to the first flower bud from sowing.…”

mentioning

confidence: 99%

Speed breeding in growth chambers and glasshouses for crop breeding and model plant research

et al. 2018

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To meet the challenge of feeding a growing population, breeders and scientists are continuously looking for ways to increase genetic gain in crop breeding. One way this can be achieved is through 'speed breeding' (SB), which shortens the breeding cycle and accelerates research studies through rapid generation advancement. The SB method can be carried out in a number of ways, one of which involves extending the duration of a plant's daily exposure to light (photoperiod) combined with early seed harvest in order to cycle quickly from seed to seed, thereby reducing the generation times for some long-day (LD) or day-neutral crops. Here we present glasshouse and growth chamber-based SB protocols with supporting data from experimentation with several crop species. These protocols describe the growing conditions, including soil media composition, lighting, temperature and spacing, which promote rapid growth of spring and winter bread wheat, durum wheat, barley, oat, various members of the Brassica family, chickpea, pea, grasspea, quinoa and the model grass Brachypodium distachyon. Points of flexibility within the protocols are highlighted, including how plant density can be increased to efficiently scale-up plant numbers for single seed descent (SSD) purposes. Conversely, instructions on how to perform SB on a small-scale by creating a benchtop SB growth cabinet that enables optimization of parameters at a low cost are provided. We also outline the procedure for harvesting and germinating premature wheat, barley and pea seed to reduce generation time. Finally, we provide troubleshooting suggestions to avoid potential pitfalls.

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“…In arabidopsis, the most noticeable shade avoidance responses include rapid internode elongation and accelerated floral initiation at the expense of leaf expansion and chlorophyll synthesis reduction (Devlin et al 1999). Similarly, research in the model long-day species pea ( Pisum sativum ) demonstrated that FR-enriched light, with an R: FR ratio below 3.5, is most effective for early floral induction (Runkle & Heins 2001; Cummings et al 2007; Croser et al 2016; Ribalta et al 2017).…”

Section: Introductionmentioning

confidence: 95%

“…Within this research, we used deep-sequencing technologies to investigate transcriptional activity under different light spectra at three time-points in the long-day plant, subterranean clover. We have previously shown the accelerated onset of flowering in a range of leguminous species under FR-enriched LED light spectra and have thus adopted this wavelength profile and compared it with a blue-enriched LED light spectra (Croser et al 2016; Pazos-Navarro et al 2017; Ribalta et al 2017). We expect that the FR-enriched spectra will accelerate the up-regulation of genes related to floral initiation.…”

Section: Introductionmentioning

confidence: 99%

Gene networks underlying faster flowering induction in response to far-red light

Navarro

Ribalta

Hurgobin

et al. 2017

Preprint

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Light is one of the main signals that regulates flowering. Low red to far-red ratios accelerate flowering in a wide range of species. The central gene pathways controlling flowering time in Arabidopsis, appear to be largely conserved in legumes. However, numerous examples exist of gene duplication and loss. The role of CONSTANS-LIKE genes as integrators of the photoperiod response has been questioned in several dicot species, including legumes. In this study on subterranean clover, using RNA-seq and controlled light spectra, we identified 13 differentially expressed genes related to light signalling, meristem identity and flowering promotion. Of these, we pinpointed genes which seem to link photoperiod and far-red light signalling coding for a With no lysine kinase, a CCT motif related to CONSTANS, a FLOWERING LOCUS T b2 like protein, and their active downstream cascade. The earlier down-regulation of these genes under blue compared to far-red-enriched light may explain their role in floral induction. A second independent approach (qPCR analysis) confirmed our findings. Contrasting responses to light quality related to reproduction and defence mechanisms were also found. These results will contribute to a better understanding of the molecular basis of flowering in response to light quality in long-day plants.

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Time to flowering of temperate pulses in vivo and generation turnover in vivo–in vitro of narrow-leaf lupin accelerated by low red to far-red ratio and high intensity in the far-red region

Cited by 59 publications

References 32 publications

Conventional and Molecular Techniques from Simple Breeding to Speed Breeding in Crop Plants: Recent Advances and Future Outlook

Conventional and Molecular Techniques from Simple Breeding to Speed Breeding in Crop Plants: Recent Advances and Future Outlook

Speed breeding in growth chambers and glasshouses for crop breeding and model plant research

Gene networks underlying faster flowering induction in response to far-red light

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