Sunflower and Abiotic Stress: Genetics and Breeding for Resistance in the—Omics Era Sunflower Abiotic Stress Breeding

Hladni, Nada; Jan, Chao‐Chien; Jocković, Milan; Cvejić, Sandra; Jocić, Siniša; Radanović, Aleksandra; Miladinović, Dragana

doi:10.1007/978-3-030-90044-1_3

Cited by 4 publications

(2 citation statements)

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“…With an oil content of 40–50% and a protein content of 17–20%, the sunflower has considerable potential to bridge the gap between global production and the demand for edible oils and animal feed ( Hussain et al, 2018 ). The sunflower is mainly grown in arid, semi-arid, or saline areas and is an attractive stress-resistant crop that grows in harsh environments ( Hladni et al, 2022 ; Kane & Rieseberg, 2007 ). In the future, sunflower cultivation is predicted to expand into marginal areas with low soil fertility and unfavorable climates ( Seiler, Jan & Hu, 2010 ).…”

Section: Introductionmentioning

confidence: 99%

Characterization of PYL gene family and identification of HaPYL genes response to drought and salt stress in sunflower

Wang,

Zhou,

Zou

et al. 2024

PeerJ

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In the context of global climate change, drought and soil salinity are some of the most devastating abiotic stresses affecting agriculture today. PYL proteins are essential components of abscisic acid (ABA) signaling and play critical roles in responding to abiotic stressors, including drought and salt stress. Although PYL genes have been studied in many species, their roles in responding to abiotic stress are still unclear in the sunflower. In this study, 19 HaPYL genes, distributed on 15 of 17 chromosomes, were identified in the sunflower. Fragment duplication is the main cause of the expansion of PYL genes in the sunflower genome. Based on phylogenetic analysis, HaPYL genes were divided into three subfamilies. Members in the same subfamily share similar protein motifs and gene exon-intron structures, except for the second subfamily. Tissue expression patterns suggested that HaPYLs serve different functions when responding to developmental and environmental signals in the sunflower. Exogenous ABA treatment showed that most HaPYLs respond to an increase in the ABA level. Among these HaPYLs, HaPYL2a, HaPYL4d, HaPYL4g, HaPYL8a, HaPYL8b, HaPYL8c, HaPYL9b, and HaPYL9c were up-regulated with PEG6000 treatment and NaCl treatment. This indicates that they may play a role in resisting drought and salt stress in the sunflower by mediating ABA signaling. Our findings provide some clues to further explore the functions of PYL genes in the sunflower, especially with regards to drought and salt stress resistance.

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Section: Introductionmentioning

confidence: 99%

Characterization of PYL gene family and identification of HaPYL genes response to drought and salt stress in sunflower

Wang,

Zhou,

Zou

et al. 2024

PeerJ

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“…Adapted to the warm climes of tropical and subtropical regions, sunflowers exhibit remarkable resistance to saline-alkali stress [20,21]. Given their pronounced stress tolerance, sunflowers serve as models for studying abiotic stress responses [22,23]. Since the whole genome sequence of Helianthus annuus was reported in 2017 [24], a wide array of TFs have been identified for their roles in responding to abiotic stresses.…”

Section: Introductionmentioning

confidence: 99%

Genome-Wide Identification and Expression Analysis of TGA Family Genes Associated with Abiotic Stress in Sunflowers (Helianthus annuus L.)

Zeng,

Gu,

Cai

et al. 2024

IJMS

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Sunflower (Helianthus annuus L.) is an important, substantial global oil crop with robust resilience to drought and salt stresses. The TGA (TGACG motif-binding factor) transcription factors, belonging to the basic region leucine zipper (bZIP) family, have been implicated in orchestrating multiple biological processes. Despite their functional significance, a comprehensive investigation of the TGA family’s abiotic stress tolerance in sunflowers remains elusive. In the present study, we identified 14 TGA proteins in the sunflower genome, which were unequally distributed across 17 chromosomes. Employing phylogenetic analysis encompassing 149 TGA members among 13 distinct species, we revealed the evolutionary conservation of TGA proteins across the plant kingdom. Collinearity analysis suggested that both HaTGA01 and HaTGA03 were generated due to HaTGA08 gene duplication. Notably, qRT-PCR analysis demonstrated that HaTGA04, HaTGA05, and HaTGA14 genes were remarkably upregulated under ABA, MeJA, and salt treatments, whereas HaTGA03, HaTGA06, and HaTGA07 were significantly repressed. This study contributes valuable perspectives on the potential roles of the HaTGA gene family under various stress conditions in sunflowers, thereby enhancing our understanding of TGA gene family dynamics and function within this agriculturally significant species.

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Unveiling sunflower morphological and phenological adaptations to drought stress

Jocković,

Jocić,

Cvejić

et al. 2024

OCL

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Drought stress significantly threatens crop productivity worldwide, requiring a comprehensive understanding of plant adaptations to alleviate its adverse effects. Sunflower, as an important source of edible oil, is greatly affected by drought in different developmental stages. This review investigates the morphological aspects and phenological adaptations of sunflower under drought conditions. Through a detailed description of morphological and phenological changes in sunflower, induced by drought, we aim to unravel the plant’s strategies for coping with water scarcity. In addition, the study describes genetic background of drought tolerance in sunflower, as well as insight about valuable genetic resources. Finally, we have described drought mitigation mechanisms known in sunflower, through morpho-physiological adaptations and agricultural practices which can alleviate the effect of drought. As a future strategy this research emphasizes the importance of genetic diversity in cultivating drought-resilient sunflower, using modern breeding techniques through genomic selection and omic’s technologies as a promising strategy in the face of escalating water limitations and development of drought tolerant and tenacious sunflower.

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Sunflower and Abiotic Stress: Genetics and Breeding for Resistance in the—Omics Era Sunflower Abiotic Stress Breeding

Cited by 4 publications

References 204 publications

Characterization of PYL gene family and identification of HaPYL genes response to drought and salt stress in sunflower

Characterization of PYL gene family and identification of HaPYL genes response to drought and salt stress in sunflower

Genome-Wide Identification and Expression Analysis of TGA Family Genes Associated with Abiotic Stress in Sunflowers (Helianthus annuus L.)

Unveiling sunflower morphological and phenological adaptations to drought stress

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