Effects of<i>Hd2</i>in the presence of the photoperiod-insensitive functional allele of<i>Hd1</i>in rice

Zhang, Zhenhua; Zhang, Yingxin; Chen, Junyu; Zhuang, Jie‐Yun; Cheng, Shifeng

doi:10.1242/bio.021071

Cited by 14 publications

(13 citation statements)

References 39 publications

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“…Frontiers in Genetics | www.frontiersin.org January 2020 | Volume 11 | Article 13 ZS97 ( Supplementary Table S2). In previous studies using the same rice cross, the ZS97 alleles in the two regions were found to decrease HD (Zhang et al, 2011;Zhang et al, 2016). These results suggest that the pleiotropic effects of major heading-date genes on AAC with opposite directions could be a common occurrence.…”

Section: Xie Et Al Rft1 Affecting Amino Acid Contentmentioning

confidence: 59%

Pleiotropic Effects of Rice Florigen Gene RFT1 on the Amino Acid Content of Unmilled Rice

et al. 2020

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In rice, the contents of protein and amino acids are the major parameters of nutritional quality. Co-localization of quantitative trait loci (QTLs) for heading date and protein content were reported, but pleiotropism of heading-date genes on protein contents has not been investigated. Here, we reported that rice florigen gene RFT1 plays an important role in controlling amino acid contents of rice grain. Firstly, 73 QTLs for the contents of 17 amino acids in unmilled rice were detected using recombinant inbred lines (RILs) of the indica rice cross Zhenshan 97 (ZS97)/Milyang 46 (MY46). Then, the effect of the largest cluster consisting of 14 QTLs, located in proximity to the rice florigen genes RFT1 and Hd3a, was validated using three populations consisting of near isogenic lines (NILs) that only segregated a region covering the target QTL. The first and second NIL populations were derived from a residual heterozygote identified from the ZS97/MY46 RIL population, consisting of homozygous lines that were only segregated in a 29.9-kb region covering the two florigen genes and a 1.7-kb region for RFT1, respectively. The third NIL population was segregated for the RFT1 ZS97 transgene in the background of japonica rice cultivar Zhonghua 11. In all the three NIL populations, RFT1 was shown to have a strong effect on the contents of most amino acids, with the ZS97 allele always having the reducing effects. By comparing QTLs for amino acid contents detected in the ZS97/MY46 RIL population and genes/QTLs previously identified for heading date difference between ZS97 and MY46, possible pleiotropism on amino acid contents was also shown for other key heading-date genes including Hd1, Ghd7, and OsGI.

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Section: Xie Et Al Rft1 Affecting Amino Acid Contentmentioning

confidence: 59%

Pleiotropic Effects of Rice Florigen Gene RFT1 on the Amino Acid Content of Unmilled Rice

et al. 2020

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“…Hd1 also plays a role in grain yield (Zhang et al 2016). To determine the viability and productivity of OX‐Hd1miP plants in LD, the panicle characteristics were measured 35 d after the first panicle emergence (Figure 1J–L; Table 1).…”

Section: Resultsmentioning

confidence: 99%

Control of flowering in rice through synthetic microProteins

Eguen

Ariza

Brambilla

et al. 2019

JIPB

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Photoperiod-dependent flowering in rice is regulated by HEADING DATE 1 (Hd1), which acts as both an activator and repressor of flowering in a daylengthdependent manner. To investigate the use of micro-Proteins as a tool to modify rice sensitivity to the photoperiod, we designed a synthetic Hd1 microProtein (Hd1miP) capable of interacting with Hd1 protein, and overexpressed it in rice. Transgenic OX-Hd1miP plants flowered significantly earlier than wild type plants when grown in non-inductive long day conditions. Our results show the potential of microProteins to serve as powerful tools for modulating crop traits and unraveling protein function.

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“…Hd2 derived from a cross between Nipponbare and Kasalath (Yano et al, 1997;Yamamoto et al, 1998) and confirmed as OsPRR37 gene (pseudo-response regulator gene) (Koo et al, 2013). Hd2 is allelic with Ghd7.1 (Yan et al, 2013) and through map based cloning approach it was confirmed that Ghd7.1 is the OsPRR37 gene, or Gao et al, (2014) reported Days to heading 7 (DTH7) and Zhang et al, (2016) detected qHD7.2, both of them encodes a pseudo-response regulator protein (OsPRR37).…”

Section: Introductionmentioning

confidence: 92%

Field Evaluation Of Conde Progenies With Early Heading Date And Resistance To Bacterial Leaf Blight

Fatimah

Prasetiyono²,

Dadang³

et al. 2020

Ann. Bogor.

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Heading date is one of key traits in rice adaptation to different environments. Rice with early maturity is very useful for increasing rice production extensively especially in Indonesia. The improvement of rice variety Conde for heading date and resistance to bacterial leaf blight (BLB) was developed through Marker Assisted Backcrossing approach (MAB). Xa7 derived from Conde as recipient parents for resistance to BLB and Hd2 gene derived from Nipponbare as a donor parent for heading date. The aim of this research was to evaluate the performance of heading date and agronomic traits of 85 BC2F4 lines in two field stations, Sukamandi (West Java) and Maros (South Sulawesi). Molecular analysis of Xa7 on chromosome 6 and Hd2 gene on chromosome 7 and agronomic performance was evaluated. Foreground analysis resulted 41% for Xa7 and 66.7% for Hd2 gene in homozygous condition. The majority of lines have similar heading date and yield with Conde and more resistance to bacterial leaf blight (BLB) than Conde. Six lines flowered earlier 5 days than Conde in Sukamandi and three lines flowered earlier 3 days in Maros. Twelve lines with flowered earlier than Conde, resistance to BLB and similar yield with Conde were selected for background analysis resulted 93% genome recovery. These lines would be further evaluated in preliminary yield trail for their stability.

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Effects ofHd2in the presence of the photoperiod-insensitive functional allele ofHd1in rice

Cited by 14 publications

References 39 publications

Pleiotropic Effects of Rice Florigen Gene RFT1 on the Amino Acid Content of Unmilled Rice

Pleiotropic Effects of Rice Florigen Gene RFT1 on the Amino Acid Content of Unmilled Rice

Control of flowering in rice through synthetic microProteins

Field Evaluation Of Conde Progenies With Early Heading Date And Resistance To Bacterial Leaf Blight

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