Hormones in tomato leaf development

Shwartz, Ido; Levy, Matan; Ori, Naomi; Bar, Maya

doi:10.1016/j.ydbio.2016.06.023

Cited by 64 publications

(75 citation statements)

References 136 publications

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“…S2). It has previously been shown that the application of exogenous BA cannot mimic the effect of endogenous CKs on tomato leaf development (Fleishon et al , 2011; Shwartz et al , 2016). …”

Section: Resultsmentioning

confidence: 99%

Cytokinin activity increases stomatal density and transpiration rate in tomato

Farber

Attia

Weiss

2016

EXBOTJ

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“…S2). It has previously been shown that the application of exogenous BA cannot mimic the effect of endogenous CKs on tomato leaf development (Fleishon et al , 2011; Shwartz et al , 2016). …”

Section: Resultsmentioning

confidence: 99%

Cytokinin activity increases stomatal density and transpiration rate in tomato

Farber

Attia

Weiss

2016

EXBOTJ

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“…Moreover, increasing expression of YUCCA genes (which have a pivotal role in the tryptophan-dependent auxin biosynthesis pathway; Hentrich et al, 2013) is correlated with increases in age and leaf complexity of the tree Gevuina avellane (Ostria-Gallardo et al, 2016). Cytokinins, such as zeatin, are important for leaf development, promoting morphogenesis during juvenile-to-adult transition (Shwartz et al, 2016). The effect of the cytokinin on leaf morphogenesis may be a result of its interaction with KNOTTED1-LIKE HOMEOBOX (KNOX1), as both are required for the regulation of leaf shape (Shani et al, 2009;Uchida et al, 2010;Bar and Ori, 2014).…”

Section: Discussionmentioning

confidence: 99%

Leaf heteroblasty in Passiflora edulis as revealed by metabolic profiling and expression analyses of the microRNAs miR156 and miR172

et al. 2019

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Background and Aims Juvenile-to-adult phase transition is marked by changes in leaf morphology, mostly due to the temporal development of the shoot apical meristem, a phenomenon known as heteroblasty. Sugars and microRNA-controlled modules are components of the heteroblastic process in Arabidopsis thaliana leaves. However, our understanding about their roles during phase-changing in other species, such as Passiflora edulis, remains limited. Unlike Arabidopsis, P. edulis (a semi-woody perennial climbing vine) undergoes remarkable changes in leaf morphology throughout juvenile-to-adult transition. Nonetheless, the underlying molecular mechanisms are unknown. Methods Here we evaluated the molecular mechanisms underlying the heteroblastic process by analysing the temporal expression of microRNAs and targets in leaves as well as the leaf metabolome during P. edulis development. Key Results Metabolic profiling revealed a unique composition of metabolites associated with leaf heteroblasty. Increasing levels of glucose and α-trehalose were observed during juvenile-to-adult phase transition. Accumulation of microRNA156 (miR156) correlated with juvenile leaf traits, whilst miR172 transcript accumulation was associated with leaf adult traits. Importantly, glucose may mediate adult leaf characteristics during de novo shoot organogenesis by modulating miR156-targeted PeSPL9 expression levels at early stages of shoot development. Conclusions Altogether, our results suggest that specific sugars may act as co-regulators, along with two microRNAs, leading to leaf morphological modifications throughout juvenile-to-adult phase transition in P. edulis.

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“…, 2009; Shwartz et al . , 2016). Furthermore, in M. truncatula , the MtPIN10‐generated local gradient of auxin activity functions differentially in lateral and terminal leaflet development (Zhou et al , 2011).…”

Section: Discussionmentioning

confidence: 99%

Lateral Leaflet Suppression 1 (LLS1), encoding the MtYUCCA1 protein, regulates lateral leaflet development in Medicago truncatula

Zhao

Jiang

et al. 2020

New Phytologist

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Summary In species with compound leaves, the positions of leaflet primordium initiation are associated with local peaks of auxin accumulation. However, the role of auxin during the late developmental stages and outgrowth of compound leaves remains largely unknown. Using genome resequencing approaches, we identified insertion sites at four alleles of the LATERAL LEAFLET SUPPRESSION1 (LLS1) gene, encoding the auxin biosynthetic enzyme YUCCA1 in Medicago truncatula. Linkage analysis and complementation tests showed that the lls1 mutant phenotypes were caused by the Tnt1 insertions that disrupted the LLS1 gene. The transcripts of LLS1 can be detected in primordia at early stages of leaf initiation and later in the basal regions of leaflets, and finally in vein tissues at late leaf developmental stages. Vein numbers and auxin content are reduced in the lls1‐1 mutant. Analysis of the lls1 sgl1 and lls1 palm1 double mutants revealed that SGL1 is epistatic to LLS1, and LLS1 works with PALM1 in an independent pathway to regulate the growth of lateral leaflets. Our work demonstrates that the YUCCA1/YUCCA4 subgroup plays very important roles in the outgrowth of lateral leaflets during compound leaf development of M. truncatula, in addition to leaf venation.

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Hormones in tomato leaf development

Cited by 64 publications

References 136 publications

Cytokinin activity increases stomatal density and transpiration rate in tomato

Cytokinin activity increases stomatal density and transpiration rate in tomato

Leaf heteroblasty in Passiflora edulis as revealed by metabolic profiling and expression analyses of the microRNAs miR156 and miR172

Lateral Leaflet Suppression 1 (LLS1), encoding the MtYUCCA1 protein, regulates lateral leaflet development in Medicago truncatula

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