Genome-Wide Characterization of B-Box Gene Family and Its Roles in Responses to Light Quality and Cold Stress in Tomato

Bu, Xin; Wang, Xiu‐Jie; Yan, Jiarong; Zhang, Ying; Zhou, Shunyuan; Sun, Xin; Yang, Youxin; Ahammed, Golam Jalal; Liu, Yufeng; Qi, Mingfang; Wang, Feng; Li, Tianlai

doi:10.3389/fpls.2021.698525

Cited by 36 publications

(42 citation statements)

References 68 publications

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“…These observations indicated that CpBBX19 may be involved in abiotic stress and hormone responses. Expression of the BBX gene family members SlBBX7, SlBBX9, and SlBBX20 was induced by cold stress in tomato [61], and there were differences in the expression of some GhBBX genes after ABA treatment in Gossypium hirsutum [62]. PavBBX6 and PavBBX9 showed strong induction under ABA, GA, and BR treatment in sweet cherry fruit [63].…”

Section: Discussionmentioning

confidence: 97%

CpBBX19, a B-Box Transcription Factor Gene of Chimonanthus praecox, Improves Salt and Drought Tolerance in Arabidopsis

Wang

Cao

et al. 2021

Genes

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Zinc-finger proteins are important transcription factors in plants, responding to adversity and regulating the growth and development of plants. However, the roles of the BBX gene family of zinc-finger proteins in wintersweet (Chimonanthus praecox) have yet to be elucidated. In this study, a group IV subfamily BBX gene, CpBBX19, was identified and isolated from wintersweet. Quantitative real-time PCR (qRT-PCR) analyses revealed that CpBBX19 was expressed in all tissues and that expression was highest in cotyledons and inner petals. CpBBX19 was also expressed in all flower development stages, with the highest expression detected in early initiating bloom, followed by late initiating bloom and bloom. In addition, the expression of CpBBX19 was induced by different abiotic stress (cold, heat, NaCl, and drought) and hormone (ABA and MeJA) treatments. Heterologous expression of CpBBX19 in Arabidopsis thaliana (Arabidopsis) enhanced the tolerance of this plant to salt and drought stress as electrolyte leakage and malondialdehyde (MDA) concentrations in transgenic Arabidopsis after stress treatments were significantly lower than those in wild-type (WT) plants. In conclusion, this research demonstrated that CpBBX19 plays a role in the abiotic stress tolerance of wintersweet. These findings lay a foundation for future studies on the BBX gene family of wintersweet and enrich understanding of the molecular mechanism of stress resistance in wintersweet.

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Section: Discussionmentioning

confidence: 97%

CpBBX19, a B-Box Transcription Factor Gene of Chimonanthus praecox, Improves Salt and Drought Tolerance in Arabidopsis

Wang

Cao

et al. 2021

Genes

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“…Plants have evolved sophisticated regulatory networks to cope with the dynamically changing environments of light and temperature during day–night and seasonal cycles. Many downstream factors are common to the two external signals, which facilitate the integration of environmental information (F. Wang et al ., 2016, 2019, 2020a; Jiang et al ., 2020; Bu et al ., 2021). It was previously shown that light receptor phyB negatively regulates cold tolerance in Arabidopsis and tomato (Franklin & Whitelam, 2007; F. Wang et al ., 2016).…”

Section: Discussionmentioning

confidence: 99%

SlFHY3 and SlHY5 act compliantly to enhance cold tolerance through the integration of myo‐inositol and light signaling in tomato

Wang

Zhang

et al. 2022

New Phytologist

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Plants have evolved sophisticated regulatory networks to cope with dynamically changing light and temperature environments during day-night and seasonal cycles. However, the integration mechanisms of light and low temperature remain largely unclear.Here, we show that low red : far-red ratio (LR : FR) induces FAR-RED ELONGATED HYPOCOTYL3 (SlFHY3) transcription under cold stress in tomato (Solanum lycopersicum). Reverse genetic approaches revealed that knocking out SlFHY3 decreases myo-inositol accumulation and increases cold susceptibility, whereas overexpressing SlFHY3 induces myoinositol accumulation and enhances cold tolerance in tomato plants.SlFHY3 physically interacts with ELONGATED HYPOCOTYL5 (SlHY5) to promote the transcriptional activity of SlHY5 on MYO-INOSITOL-1-PHOSPHATE SYNTHASE 3 (SlMIPS3) and induce myo-inositol accumulation in tomato plants under cold stress. Disruption of SlHY5 and SlMIPS3 largely suppresses the cold tolerance of SlFHY3-overexpressing plants and myoinositol accumulation in tomato. Furthermore, silencing of SlMIPS3 drastically reduces myo-inositol accumulation and compromises LR : FR-induced cold tolerance in tomato.Together, our results reveal a crucial role of SlFHY3 in LR : FR-induced cold tolerance in tomato and unravel a novel regulatory mechanism whereby plants integrate dynamic environmental light signals and internal cues (inositol biosynthesis) to induce and control cold tolerance in tomato plants.

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“…In this study, NPQ was decreased and qP was increased by LT + USL treatment throughout the entire LT stress duration ( Figures 3C,D ), indicating a decrease in the level of energy dissipation and an increase in the electron transfer activity. According to a previous study, the impairment of SlBBX7 , SlBBX9 , and SlBBX20 suppresses the photosynthetic response and NPQ immediately after cold stress; thus, these genes positively regulate cold tolerance in tomato plants by preventing photoinhibition and enhancing photoprotection ( Bu et al, 2021 ). The antioxidative mechanism is another important regulatory balance between the production and scavenging of ROS.…”

Section: Discussionmentioning

confidence: 99%

“…SIFHY3 and SIHY5 act together to enhance cold tolerance through the integration of myoinositol and light signaling in tomato ( Wang et al, 2021 ). Bu et al (2021) characterized 31 B-BOX ( BBX ) genes in tomato that play important roles in the plant response to cold and light signaling. Plants must maintain membrane fluidity at the cellular level in progressively cold and oxidized environments to overcome cold stress.…”

Section: Introductionmentioning

confidence: 99%

Cold Stress Resistance of Tomato (Solanum lycopersicum) Seedlings Is Enhanced by Light Supplementation From Underneath the Canopy

Song

et al. 2022

Front. Plant Sci.

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Adverse environmental conditions, such as low temperature (LT), greatly limit the growth and production of tomato. Recently, light-emitting diodes (LEDs) with specific spectra have been increasingly used in horticultural production facilities. The chosen spectrum can affect plant growth, development, and resistance, but the physiological regulatory mechanisms are largely unknown. In this study, we investigated the effects of LED light supplementation (W:B = 2:1, light intensity of 100 μmol⋅m–2⋅s–1, for 4 h/day from 9:00 to 13:00) from above and below the canopy on tomato resistance under sub-LT stress (15/8°C). The results showed that supplemental lighting from underneath the canopy (USL) promoted the growth of tomato seedlings, as the plant height, stem diameter, root activity, and plant biomass were significantly higher than those under LT. The activity of the photochemical reaction center was enhanced because of the increase in the maximal photochemical efficiency (Fv/Fm) and photochemical quenching (qP), which distributed more photosynthetic energy to the photochemical reactions and promoted photosynthetic performance [the maximum net photosynthetic rate (Pmax) was improved]. USL also advanced the degree of stomatal opening, thus facilitating carbon assimilation under LT. Additionally, the relative conductivity (RC) and malondialdehyde (MDA) content were decreased, while the soluble protein content and superoxide dismutase (SOD) activity were increased with the application of USL under LT, thereby causing a reduction in membrane lipid peroxidation and alleviation of stress damage. These results suggest that light supplementation from underneath the canopy improves the cold resistance of tomato seedlings mainly by alleviating the degree of photoinhibition on photosystems, improving the activity of the photochemical reaction center, and enhancing the activities of antioxidant enzymes, thereby promoting the growth and stress resistance of tomato plants.

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Genome-Wide Characterization of B-Box Gene Family and Its Roles in Responses to Light Quality and Cold Stress in Tomato

Cited by 36 publications

References 68 publications

CpBBX19, a B-Box Transcription Factor Gene of Chimonanthus praecox, Improves Salt and Drought Tolerance in Arabidopsis

CpBBX19, a B-Box Transcription Factor Gene of Chimonanthus praecox, Improves Salt and Drought Tolerance in Arabidopsis

SlFHY3 and SlHY5 act compliantly to enhance cold tolerance through the integration of myo‐inositol and light signaling in tomato

Cold Stress Resistance of Tomato (Solanum lycopersicum) Seedlings Is Enhanced by Light Supplementation From Underneath the Canopy

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