<scp>DTH8</scp> overexpression induces early flowering, boosts yield, and improves stress recovery in rice cv <scp>IR64</scp>

Mishra, Manjari; Rathore, Ray Singh; Joshi, Rohit; Pareek, Ashwani; Singla‐Pareek, Sneh L.

doi:10.1111/ppl.13691

Cited by 6 publications

(3 citation statements)

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“…The discovery of early-maturity genes was an important step in selecting crop varieties with early maturity and high yields [ 28 ]. OsNF-YB11 is very important for the heading date, plant height, and yield of rice [ 29 ]. OsNF-YB1 is specifically expressed in the aleurone layer of developing endosperm and regulates grain filling and endosperm development, and it affects grain yield and quality [ 30 , 31 ].…”

Section: Discussionmentioning

confidence: 99%

SiNF-YC2 Regulates Early Maturity and Salt Tolerance in Setaria italica

Niu

Guan

et al. 2023

IJMS

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Early maturity is an important agronomic trait in most crops, because it can solve the problem of planting in stubble for multiple cropping as well as make full use of light and temperature resources in alpine regions, thereby avoiding damage from low temperatures in the early growth period and early frost damage in the late growth period to improve crop yield and quality. The expression of genes that determine flowering affects flowering time, which directly affects crop maturity and indirectly affects crop yield and quality. Therefore, it is important to analyze the regulatory network of flowering for the cultivation of early-maturing varieties. Foxtail millet (Setaria italica) is a reserve crop for future extreme weather and is also a model crop for functional gene research in C4 crops. However, there are few reports on the molecular mechanism regulating flowering in foxtail millet. A putative candidate gene, SiNF-YC2, was isolated based on quantitative trait loci (QTL) mapping analysis. Bioinformatics analysis showed that SiNF-YC2 has a conserved HAP5 domain, which indicates that it is a member of the NF-YC transcription factor family. The promoter of SiNF-YC2 contains light-response-, hormone-, and stress-resistance-related elements. The expression of SiNF-YC2 was sensitive to the photoperiod and was related to the regulation of biological rhythm. Expression also varied in different tissues and in response to drought and salt stress. In a yeast two-hybrid assay, SiNF-YC2 interacted with SiCO in the nucleus. Functional analysis suggested that SiNF-YC2 promotes flowering and improves resistance to salt stress.

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Section: Discussionmentioning

confidence: 99%

SiNF-YC2 Regulates Early Maturity and Salt Tolerance in Setaria italica

Niu

Guan

et al. 2023

IJMS

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“…Variation of these so-called owering-time genes (or heading-time genes) certainly impacts the owering initiation and in uences the growth period, which subsequently alters the regional adaptability in rice (Takahashi et Interestingly, overexpression of DTH8 leads to owering early, boosts yield and improves stress recovery in a mega rice cultivar (Mishra et al 2022). AtNF-YB1 can also interact physically with CO, but inhibiting the FT transcription and delaying owering in LD (Wenkel et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Expression of AtNF-YB1 in rice leading to early flowering shows potential in rice breeding

Chen

Feng

et al. 2023

Preprint

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Grain yield and growth period are two critical agronomic traits for a rice cultivar to be used in field production. The growth period is mainly determined by the flowering time, which also greatly affects grain yields. An Arabidopsis gene, AtNF-YB1, was introduced into rice, including inbred Kasalath and two hybrids, Jinfeng × Chenghui 727 and Jinfeng × Chuanhui 907. All the transgenic rice showed flowering early under both natural long-day (NLD) and natural short-day (NSD). Kasalath with expression of the gene also showed shorter plant height and less grain yield with the decrease in spike length and grain number but more productive panicles. But, for the hybrids, much smaller or even no reduction of spike length, grain number, and more productive panicle were observed so that grain yields were kept or even increased underNLD. Transcript analysis of the major flowering-time genes suggested that suppression of the Ghd7 transcription activated flowering transition early in the transgenic rice. RNA-Seq further demonstrated that three pathways related to plant photosynthesis were markedly up-regulated in both Jinfeng B and hybrid Jinfeng ×Chuanhui 907. Accordingly, up-regulated photosynthetic rates in the transgenic plants were then observed in the subsequent experiments. All these results suggest that expression of AtNF-YB1 in rice may be useful for creating variety with early ripening, particularly for hybrid rice.

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“…Several studies involved the simultaneous overexpression of several genes, including γ‐TOCOPHEROL METHYLTRANSFERASE ( γ‐TMT ) and GLYOXALASE I ( gly I ) in Brassica juncea (Kumar et al, 2022a). The following transgenes were found to confer salinity and drought tolerance in transgenic crop plants: a cowpea VuTCP9 gene that encodes a nuclear‐localized class‐I TCP transcription factor (Mishra et al, 2022a), a rice DTH8 (days to heading) gene that encodes a putative HAP3/NF‐YB/CBF subunit of the CCAAT‐box binding protein (Mishra et al, 2022b), and OsSOS2 that encodes a serine/threonine kinase (Kumar et al, 2022b). The overexpression of a salt and drought stress‐inducible banana NAC gene ( MusaATAF2 ) was shown to induce leaf senescence by promoting chlorophyll catabolism and H 2 O 2 accumulation (Bhakta et al, 2022), suggesting that this gene plays a role in stress‐induced leaf senescence.…”

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confidence: 99%