Genome-wide identification of the HKT transcription factor family and their response to salt stress in foxtail millet (Setaria italica)

Yang, Yulu; Cheng, Jinjin; Han, Hui-Lin; Sun, Rong; Li, Yajun; Zhang, Yakun; Han, Yuanhuai; Zhang, Hui; Li, Xukai

doi:10.1007/s10725-022-00903-z

Cited by 4 publications

(3 citation statements)

References 43 publications

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“…Previous studies showed that the HKT family genes regulate K + concentration and homeostasis in plants [7,36]. To date, the HKT family has been identified in different species [8][9][10][11][12][14][15][16][17][18][19][20]. In this study, we identified 36 HKT family members in the six Brassica U-triangle species.…”

Section: Discussionmentioning

confidence: 87%

“…To date, numerous studies have identified HKT genes in many monocots and dicots, including wheat (Triticum aestivum L.) [8][9][10][11], Arabidopsis (Arabidopsis thaliana) [9,[11][12][13], rice (Oryza sativa L.) [9,14,15], barley (Hordeum vulgare L.) [9,11,16], maize (Zea mays L.) [9,15], tomato (Solanum lycopersicum L.) [9,17], sorghum (Sorghum bicolor) [9,18], soybean (Glycine max) [9,19], foxtail millet (Setaria italica) [20], and some Rosaceae species [9]. HKTs share a characteristic structure made up of four transmembrane domain-pore domain-transmembrane domain units (MPM1-MPM4) [7].…”

Section: Introductionmentioning

confidence: 99%

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Identification of the High-Affinity Potassium Transporter Gene Family (HKT) in Brassica U-Triangle Species and Its Potential Roles in Abiotic Stress in Brassica napus L.

Yang,

Hu,

Sun

et al. 2023

Plants

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Members of the high-affinity potassium transporter (HKT) protein family regulate the uptake and homeostasis of sodium and potassium ions, but little research describes their roles in response to abiotic stresses in rapeseed (Brassica napus L.). In this study, we identified and characterized a total of 36 HKT genes from the species comprising the triangle of U model (U-triangle species): B. rapa, B. nigra, B. oleracea, B. juncea, B. napus, and B. carinata. We analyzed the phylogenetic relationships, gene structures, motif compositions, and chromosomal distributions of the HKT family members of rapeseed. Based on their phylogenetic relationships and assemblage of functional domains, we classified the HKT members into four subgroups, HKT1;1 to HKT1;4. Analysis of the nonsynonymous substitutions (Ka), synonymous substitutions (Ks), and the Ka/Ks ratios of HKT gene pairs suggested that these genes have experienced strong purifying selective pressure after duplication, with their evolutionary relationships supporting the U-triangle theory. Furthermore, the expression profiles of BnaHKT genes varies among potassium, phytohormone and heavy-metal treatment. Their repression provides resistance to heavy-metal stress, possibly by limiting uptake. Our results systematically reveal the characteristics of HKT family proteins and their encoding genes in six Brassica species and lay a foundation for further exploration of the role of HKT family genes in heavy-metal tolerance.

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Section: Discussionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Identification of the High-Affinity Potassium Transporter Gene Family (HKT) in Brassica U-Triangle Species and Its Potential Roles in Abiotic Stress in Brassica napus L.

Yang,

Hu,

Sun

et al. 2023

Plants

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“…The total planting area of foxtail millet in China is approximately 1,500,000 hectares. Its useful characteristics include drought and barrenness tolerance, salt tolerance, high water use efficiency, wide adaptability, strong yield stability, and an ability to grow in poor soil conditions [2,3]. Foxtail millet grains are particularly rich in fiber, starch, protein, and vitamins and have a high iron content [4,5].…”

Section: Introductionmentioning

confidence: 99%

Effects of Penoxsulam on Photosynthetic Characteristics and Safety Evaluation of Foxtail Millet

Dong,

Chen,

et al. 2024

Agronomy

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Foxtail millet planting has a long history and profound role in agricultural civilization. However, weeds have become one of the obstacles restricting the development of the foxtail millet industry. Penoxsulam, as an early post-emergence herbicide for controlling gramineous weeds in paddy fields, is effective for some broadleaf weeds. In this study, six different doses (CK, 0.5X, 1X, 2X, 3X, 4X) of penoxsulam were sprayed at the 3–5 leaf stage of the conventional variety Jingu 21 to study its effect on the growth and development of foxtail millet, in order to screen out the appropriate spraying concentration. The main results are as follows: Within 15 days after spraying penoxsulam, the plant height and leaf area of foxtail millet decreased with the increase in spraying dose, and gradually recovered 15–25 days after spraying, but there were still significant differences compared with CK. The photosynthetic pigment content, net photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (Gs), the maximum photochemical efficiency (Fv/Fm), photosynthetic system II actual photochemical efficiency (Y(II)), and photochemical quenching coefficient (qP) of foxtail millet decreased with an increase in the penoxsulam spraying dose, while the intercellular CO2 concentration (Ci) and non-photochemical quenching coefficient (NPQ) showed an upward trend. There was almost no significant difference in each index between the spraying dose of 0.5X and 1X and CK, but the photosynthesis of foxtail millet leaves was still significantly inhibited under a spraying dose of 3X and 4X. Penoxsulam had certain growth-inhibiting effects on Echinochloa crus-galli (L.) Beauv. (E. crus-galli), Digitaria sanguinalis (L.) Scop. (D. sanguinalis), Chenopodium album L. (C. album), and Amaranthus retroflexus L. (A. retroflexus) which increased as the spraying dosage increased. Our study found that spraying dose groups of 0.5X and 1X penoxsulam were safe for foxtail millet growth and could be used to control gramineous weeds in fields. Other spraying doses are not recommended in the field due to their serious phytotoxicity to foxtail millet, which provides a new measure for weed control in foxtail millet fields.

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The role of NaHS pretreatment in improving salt stress resistance in foxtail millet seedlings: physiological and molecular mechanisms

Zhang,

Ding,

Yang

et al. 2023

Plant Signaling & Behavior

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Genome-wide identification of the HKT transcription factor family and their response to salt stress in foxtail millet (Setaria italica)

Cited by 4 publications

References 43 publications

Identification of the High-Affinity Potassium Transporter Gene Family (HKT) in Brassica U-Triangle Species and Its Potential Roles in Abiotic Stress in Brassica napus L.

Identification of the High-Affinity Potassium Transporter Gene Family (HKT) in Brassica U-Triangle Species and Its Potential Roles in Abiotic Stress in Brassica napus L.

Effects of Penoxsulam on Photosynthetic Characteristics and Safety Evaluation of Foxtail Millet

The role of NaHS pretreatment in improving salt stress resistance in foxtail millet seedlings: physiological and molecular mechanisms

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