Petal Development in Lotus japonicus

Weng, Lin; Tian, Zhaoxia; Feng, Xianzhong; Li, Xin; Xu, Shilei; Xiu, Hu; Luo, Da; Yang, Jun

doi:10.1111/j.1744-7909.2011.01072.x

Cited by 25 publications

(33 citation statements)

References 36 publications

(67 reference statements)

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“…However, there is not yet any evidence that MIXTA plays a role in PCS differentiation in legumes (Ojeda et al, 2009). In Lotus japonicus, the genes, CYCLOIDEA 2 (LjCyc2) and KEELED WING 1 (KEW1 or LjCyc3) are associated with dorsal and lateral petal identity, respectively (Weng et al, 2011). Now, there is no information about the precise pathway by which petal identity genes promote the differentiation of the epidermal types described in this study.…”

Section: Discussionmentioning

confidence: 77%

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Petal and Sepal Epidermal Micromorphology of Six Lathyrus Taxa (Fabaceae) and their Systematic Value

Cildir

Kahraman

Doğan

2012

Not Bot Hort Agrobot Cluj

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In this study, the epidermal types and their distribution on dorsal and lateral petals, the trichome types and their density on sepals of Lathyrus chloranthus, L. digitatus, L. laxiflorus subsp. laxiflorus, L. roseus subsp. roseus, L. sativus, and L. tuberosus, belonging to sections Lathyrus, Lathyrostylis, Pratensis, and Orobon of the genus Lathyrus in Turkey were investigated using light microscopy (LM) and scanning electron microscopy (SEM), and the systematic significance of these characters was evaluated. These taxa, except L. sativus, are studied for the first time under aspects of the petal and sepal micromorphology. Three major epidermal types were recognized on the petal: tabular rugose striate cells (TRS), areolate cells with more or less striations (AS), and papillose conical striate cells (PCS). TRS and AS were further subdivided into three subtypes. TRS was found on the dorsal and lateral petals of L. chloranthus, L. sativus, and L. tuberosus: the dorsal petals of L. roseus subsp. roseus and the lateral petals of L. laxiflorus subsp. laxiflorus, while AS was present on the dorsal and lateral petals of L. digitatus and the lateral petals of L. roseus subsp. roseus. PCS was found only on the dorsal petals of L. digitatus. Three main types of trichomes on the sepal were observed: peltate glandular, capitate glandular, and nonglandular trichomes. The capitate glandular and nonglandular trichomes were further subdivided into three subtypes. The peltate glandular trichomes were present only in L. chloranthus, but absent in the others. The capitate glandular trichomes were found in L. chloranthus, L. laxiflorus subsp. laxiflorus, L. roseus subsp. roseus, and L. tuberosus. The nonglandular trichomes were always present in L. chloranthus and L. laxiflorus subsp. laxiflorus. The present results show that the petal and sepal micromorphology can be used in delimitation of the taxa based on petal and sepal micromorphology.

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Section: Discussionmentioning

confidence: 77%

“…TRS was the dominant epidermal type in the dorsal and lateral petals of the taxa. PCS Molecular genetic studies show that each petal in a papilionoid legume flower has a distinct molecular identity that may be marked by epidermal type (Cronk, 2006;Weng et al, 2011). Many studies have focused on the molecular genetics of PCS cell type.…”

Section: Discussionmentioning

confidence: 99%

Petal and Sepal Epidermal Micromorphology of Six Lathyrus Taxa (Fabaceae) and their Systematic Value

Cildir

Kahraman

Doğan

2012

Not Bot Hort Agrobot Cluj

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“…; Weng et al . ). We included L. filicaulis and L. japonicus to allow comparison with expression patterns reported previously in L. japonicus .…”

Section: Methodsmentioning

confidence: 97%

“…; Weng et al . ), together with six later stages (8–13) of development also as previously described (Ojeda et al . ).…”

Section: Methodsmentioning

confidence: 98%

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Temporal, but not spatial, changes in expression patterns of petal identity genes are associated with loss of papillate conical cells and the shift to bird pollination in Macaronesian Lotus (Leguminosae)

et al. 2017

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In the generally bee-pollinated genus Lotus a group of four species have evolved bird-pollinated flowers. The floral changes in these species include altered petal orientation, shape and texture. In Lotus these characters are associated with dorsiventral petal identity, suggesting that shifts in the expression of dorsal identity genes may be involved in the evolution of bird pollination. Of particular interest is Lotus japonicus CYCLOIDEA 2 (LjCYC2), known to determine the presence of papillate conical cells on the dorsal petal in L. japonicus. Bird-pollinated species are unusual in not having papillate conical cells on the dorsal petal. Using RT-PCR at various stages of flower development, we determined the timing of expression in all petal types for the three putative petal identity genes (CYC-like genes) in different species with contrasting floral morphology and pollination syndromes. In bird-pollinated species the dorsal identity gene, LjCYC2, is not expressed at the floral stage when papillate conical cells are normally differentiating in bee-pollinated species. In contrast, in bee-pollinated species, LjCYC2 is expressed during conical cell development. Changes in the timing of expression of the above two genes are associated with modifications in petal growth and lateralisation of the dorsal and ventral petals in the bird-pollinated species. This study indicates that changes in the timing, rather than spatial distribution, of expression likely contribute to the modifications of petal micromorphology and petal size during the transition from bee to bird pollination in Macaronesian Lotus species.

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Biological features and regulatory mechanisms of salt tolerance in plants

Liu

2019

J of Cellular Biochemistry

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Halophytes play a vital role in saline agriculture because these plants are necessary to increase the food supply to meet the demands of the growing world population. In addition, the transfer of salt-resistance genes from halophytes using genetic technologies has the potential to increase the salt tolerance of xerophytes. Characterization of some particularly promising halophyte model organisms has revealed the important new insights into the salt tolerance mechanisms used by plants. Numerous advances using these model systems have improved our understanding of salt tolerance regulation and salt tolerance-associated changes in gene expression, and these mechanisms have important implications for saline agriculture. Recent findings provide a basis for future studies of salt tolerance in plants, as well as the development of improved strategies for saline agriculture to increase yields of food, feed, and fuel crops. K E Y W O R D Shalophyte, mechanism, model organism, saline agriculture, salt tolerance

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Petal Development in Lotus japonicus

Cited by 25 publications

References 36 publications

Petal and Sepal Epidermal Micromorphology of Six Lathyrus Taxa (Fabaceae) and their Systematic Value

Petal and Sepal Epidermal Micromorphology of Six Lathyrus Taxa (Fabaceae) and their Systematic Value

Temporal, but not spatial, changes in expression patterns of petal identity genes are associated with loss of papillate conical cells and the shift to bird pollination in Macaronesian Lotus (Leguminosae)

Biological features and regulatory mechanisms of salt tolerance in plants

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