Gene dosage effects and signatures of purifying selection in lateral organ boundaries domain (LBD) genes LBD1 and LBD18

Bdeir, Roba; Busov, Victor; Yordanov, Yordan S.; Gailing, Oliver

doi:10.1007/s00606-015-1272-4

Cited by 3 publications

(3 citation statements)

References 52 publications

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“…Arabidopsis contained four and three members in IIa and IIb, respectively. Interestingly, our results were roughly the same as those of the incomplete potato study conducted by Bdeir et al [29]. The difference is that we found seven homologous genes of potato to AtLBD1, five of which had higher similarities: StLBD4-1 , StLBD6-8 , StLBD6-2 , StLBD11-2 , and StLBD11-3 .…”

Section: Resultssupporting

confidence: 90%

Genome-Wide Analysis of the Lateral Organ Boundaries Domain (LBD) Gene Family in Solanum tuberosum

Liu

Cao

Chen

et al. 2019

IJMS

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Lateral organ boundaries domain (LBD) proteins belong to a particular class of transcription factors of lateral organ boundary (LOB) specific domains that play essential roles in plant growth and development. However, a potato phylogenetic analysis of the LBD family has not been fully studied by scholars and researchers. In this research, bioinformatics methods and the growth of potatoes were used to identify 43 StLBD proteins. We separated them into seven subfamilies: Ia, Ib, Ic, Id, Ie, IIa and IIb. The number of amino acids encoded by the potato LBD family ranged from 94 to 327. The theoretical isoelectric point distribution ranged from 4.16 to 9.12 Kda, and they were distributed among 10 chromosomes. The results of qRT-PCR showed that the expression levels of StLBD2-6 and StLBD3-5 were up-regulated under drought stress in the stem. The expression levels of StLBD1-5 and StLBD2-6 were down-regulated in leaves. We hypothesized that StLBD1-5 was down-regulated under drought stress, and that StLBD2-6 and StLBD3-5 up-regulation might help to maintain the normal metabolism of potato and enhance the potatoes’ resistance to drought.

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Section: Resultssupporting

confidence: 90%

Genome-Wide Analysis of the Lateral Organ Boundaries Domain (LBD) Gene Family in Solanum tuberosum

Liu

Cao

Chen

et al. 2019

IJMS

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“…Bdeir et al (2016) and Yordanov et al (2010) previously identified genes with a role in bark development [ 22 , 61 ]. Based on the generation of loss-of-function phenotypes through transgenic plants, Lateral Organ Boundaries Domain (LBD) genes were found to have a crucial role in meristem maintenance and were identified as important regulators of woody perennial growth in poplar, specifically in Populus tremula x Populus alba (Pta).…”

Section: Discussionmentioning

confidence: 99%

Quantitative trait locus mapping of Populus bark features and stem diameter

et al. 2017

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BackgroundBark plays important roles in photosynthate transport and storage, along with physical and chemical protection. Bark texture varies extensively among species, from smooth to fissured to deeply furrowed, but its genetic control is unknown. This study sought to determine the main genomic regions associated with natural variation in bark features and stem diameter. Quantitative trait loci (QTL) were mapped using an interspecific pseudo-backcross pedigree (Populus trichocarpa x P. deltoides and P. deltoides) for bark texture, bark thickness and diameter collected across three years, two sites and three biological replicates per site.ResultsQTL specific to bark texture were highly reproducible in shared intervals across sites, years and replicates. Significant positive correlations and co-localization between trait QTL suggest pleiotropic regulators or closely linked genes. A list of candidate genes with related putative function, location close to QTL maxima and with the highest expression level in the phloem, xylem and cambium was identified.ConclusionCandidate genes for bark texture included an ortholog of Arabidopsis ANAC104 (PopNAC128), which plays a role in lignified fiber cell and ray development, as well as Pinin and Fasciclin (PopFLA) genes with a role in cell adhesion, cell shape and migration. The results presented in this study provide a basis for future genomic characterization of genes found within the QTL for bark texture, bark thickness and diameter in order to better understand stem and bark development in Populus and other woody perennial plants. The QTL mapping approach identified a list of prime candidate genes for further validation using functional genomics or forward genetics approaches.Electronic supplementary materialThe online version of this article (10.1186/s12870-017-1166-4) contains supplementary material, which is available to authorized users.

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“…At LBD16 , OsCRL1, and ZmRTCS are involved in root development downstream of the auxin signal transduction pathway [ 9 , 23 , 24 , 25 ]. In trees, LBD genes also promote stem thickening by accelerating the cell division activity of vascular cambium cells during secondary growth [ 26 , 27 , 28 ]. In addition to participating in plant growth and development, LBD genes are involved in plants’ responses to external biotic and abiotic stresses [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

ZmLBD5 Increases Drought Sensitivity by Suppressing ROS Accumulation in Arabidopsis

Xiong

Zhang

Zheng

et al. 2022

Plants

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Drought stress is known to significantly limit crop growth and productivity. Lateral organ boundary domain (LBD) transcription factors—particularly class-I members—play essential roles in plant development and biotic stress. However, little information is available on class-II LBD genes related to abiotic stress in maize. Here, we cloned a maize class-II LBD transcription factor, ZmLBD5, and identified its function in drought stress. Transient expression, transactivation, and dimerization assays demonstrated that ZmLBD5 was localized in the nucleus, without transactivation, and could form a homodimer or heterodimer. Promoter analysis demonstrated that multiple drought-stress-related and ABA response cis-acting elements are present in the promoter region of ZmLBD5. Overexpression of ZmLBD5 in Arabidopsis promotes plant growth under normal conditions, and suppresses drought tolerance under drought conditions. Furthermore, the overexpression of ZmLBD5 increased the water loss rate, stomatal number, and stomatal apertures. DAB and NBT staining demonstrated that the reactive oxygen species (ROS) decreased in ZmLBD5-overexpressed Arabidopsis. A physiological index assay also revealed that SOD and POD activities in ZmLBD5-overexpressed Arabidopsis were higher than those in wild-type Arabidopsis. These results revealed the role of ZmLBD5 in drought stress by regulating ROS levels.

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Gene dosage effects and signatures of purifying selection in lateral organ boundaries domain (LBD) genes LBD1 and LBD18

Cited by 3 publications

References 52 publications

Genome-Wide Analysis of the Lateral Organ Boundaries Domain (LBD) Gene Family in Solanum tuberosum

Genome-Wide Analysis of the Lateral Organ Boundaries Domain (LBD) Gene Family in Solanum tuberosum

Quantitative trait locus mapping of Populus bark features and stem diameter

ZmLBD5 Increases Drought Sensitivity by Suppressing ROS Accumulation in Arabidopsis

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