<i>Agave REVEILLE1</i>regulates the onset and release of seasonal dormancy in<i>Populus</i>

Liu, Degao; Tang, Dan; Xie, Meng; Zhang, Jin; Zhai, Longmei; Mao, Jiangping; Luo, Chen; Lipzen, Anna; Zhang, Yu; Savage, Emily; Yuan, Guoliang; Guo, Haobo; Tadesse, Dimiru; Hu, Rongbin; Jawdy, Sara; Cheng, Hua; Li, Linling; Yer, Huseyin; Clark, Miranda M; Sun, Huayu; Shi, Jiyuan; Budhathoki, Roshani; Kumar, Rahul; Kamuda, Troy; Li, Yanjun; Pennacchio, Christa; Barry, Kerrie; Schmutz, Jeremy; Berry, Rajiv; Muchero, Wellington; Chen, Jay; Li, Yi; Tuskan, Gerald A.; Yang, Xiaohan

doi:10.1093/plphys/kiac588

Cited by 5 publications

(2 citation statements)

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“…In plant breeding, various methods such as intervarietal selection, wide hybridization, transgene incorporation, and genome editing have been widely employed to enhance stress tolerance and other desirable traits [28][29][30][31][32]. Wild rice germplasms have been extensively demonstrated to be a source of stress resistance genes for rice breeding programs [17].…”

Section: Discussionmentioning

confidence: 99%

Genetic Variation in Tolerance to Iron Deficiency among Species of Oryza

Kumar

Yer

2023

Crops

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Transplanted rice cultivation has caused groundwater depletion in several regions globally. Direct-seeded rice under aerobic conditions is a water-saving alternative. However, under aerobic conditions, iron in the soil is oxidized from the ferrous to ferric forms, which are not easily available to rice crops, resulting in iron-deficiency-induced chlorosis (IDIC) and causing significant reductions in yield. Cultivated rice accessions have limited variations in IDIC tolerance, while the wild Oryza germplasm could be a potential source of IDIC tolerance. In this study, 313 Oryza accessions were evaluated for IDIC tolerance at the tillering stage under aerobic conditions and 20 IDIC-tolerant lines were identified. The twenty lines showed no signs of chlorosis and had high levels of iron content and SPAD values, while the eight cultivated controls exhibited varying degrees of chlorosis symptoms and low levels of SPAD and iron content. To confirm their tolerance, the selected lines were evaluated again in a subsequent year, and they showed comparable levels of tolerance, indicating that these lines were efficient in iron uptake and utilization, resulting in maintained high chlorophyll and leaf area index. These accessions may be useful for developing IDIC-tolerant cultivars for aerobic rice cultivation and future studies of the molecular basis of IDIC tolerance.

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Section: Discussionmentioning

confidence: 99%

Genetic Variation in Tolerance to Iron Deficiency among Species of Oryza

Kumar

Yer

2023

Crops

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“…Studies on Japanese pear have shown that upregulation of PpEBB expression during the early stages of bud dormancy release acts on the promoters of cell cycle (CYCD) genes (Anh Tuan et al, 2016). Additionally, Liu et al, demonstrated that heterologous expression of agave AaRVE1 in poplar can both delay bud dormancy in autumn and accelerate bud sprouting in spring (Liu et al, 2022a). Tan et al, used linkage mapping to investigate the tea bud sprouting index by mapping quantitative trait loci (QTLs).…”

Section: Introductionmentioning

confidence: 99%

Uncovering the complex regulatory network of spring bud sprouting in tea plants: insights from metabolic, hormonal, and oxidative stress pathways

Tang,

Chen,

Huang

et al. 2023

Front. Plant Sci.

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The sprouting process of tea buds is an essential determinant of tea quality and taste, thus profoundly impacting the tea industry. Buds spring sprouting is also a crucial biological process adapting to external environment for tea plants and regulated by complex transcriptional and metabolic networks. This study aimed to investigate the molecular basis of bud sprouting in tea plants firstly based on the comparisons of metabolic and transcriptional profiles of buds at different developmental stages. Results notably highlighted several essential processes involved in bud sprouting regulation, including the interaction of plant hormones, glucose metabolism, and reactive oxygen species scavenging. Particularly prior to bud sprouting, the accumulation of soluble sugar reserves and moderate oxidative stress may have served as crucial components facilitating the transition from dormancy to active growth in buds. Following the onset of sprouting, zeatin served as the central component in a multifaceted regulatory mechanism of plant hormones that activates a range of growth–related factors, ultimately leading to the promotion of bud growth. This process was accompanied by significant carbohydrate consumption. Moreover, related key genes and metabolites were further verified during the entire overwintering bud development or sprouting processes. A schematic diagram involving the regulatory mechanism of bud sprouting was ultimately proposed, which provides fundamental insights into the complex interactions involved in tea buds.

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Molecular and physiological characterization of tillering and shade tolerance of dwarf mutants of perennial ryegrass

Kumar,

Yer,

et al. 2024

Preprint

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Tillering and shade tolerance are important traits in turfgrass, influenced by environmental factors, nutrients, and hormones. Shade stress negatively affects tillering. In this study, two dwarf mutants, shadow-1 and shadow-2, developed via Gamma-ray and fast-neutron mutagenesis, respectively, showed significantly higher tillering than the wild-type under greenhouse conditions. Both mutants demonstrated shade tolerance in plant height, grass quality, and color under 85% and 95% shade conditions, while shade-induced inhibition of tillering was observed in both the mutants and the wild-type. In comparison to wild-type plants under 95% shade conditions, we observed that the cytokinin biosynthetic gene IPT8 is upregulated, while the cytokinin inactivating gene CKX2 is downregulated in shadow-1. Similarly, the GA biosynthetic genes CPS1, GA2ox3, and GA20ox1 are upregulated, while the GA inactivating gene GA20ox8 is downregulated in the shadow-1 mutant. Furthermore, the ethylene biosynthetic genes ACS and ACO are also downregulated in the shadow-1 mutant. Consistently, we observed that wild-type plants exhibit increased GA and reduced CK levels, while shadow-1 mutant plants have reduced GA but increased CK levels. This explains the shadow-1 mutant's shade tolerance in terms of plant height, grass quality, and color. Conversely, the tillering inhibitor genes CRY1, MAX2, and SnRK1 are upregulated in both wild-type and shadow-1 mutant plants. Our results provide novel insights into the mechanisms behind tillering and shade tolerance in turfgrasses under shade conditions.

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Agave REVEILLE1regulates the onset and release of seasonal dormancy inPopulus

Cited by 5 publications

References 47 publications

Genetic Variation in Tolerance to Iron Deficiency among Species of Oryza

Genetic Variation in Tolerance to Iron Deficiency among Species of Oryza

Uncovering the complex regulatory network of spring bud sprouting in tea plants: insights from metabolic, hormonal, and oxidative stress pathways

Molecular and physiological characterization of tillering and shade tolerance of dwarf mutants of perennial ryegrass

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