Search results for: Yuval Eshed

Items from 1 to 16 out of 16 results

article

Inhibition of gibberellin accumulation by water deficiency promotes fast and long‐term ‘drought avoidance’ responses in tomato

Hagai Shohat, Hadar Cheriker, Himabindu Vasuki Kilambi, Natanella Illouz Eliaz, more

New Phytologist > 232 > 5 > 1985 - 1998

Plants reduce transpiration to avoid dehydration during drought episodes by stomatal closure and inhibition of canopy growth. Previous studies have suggested that low gibberellin (GA) activity promotes these ‘drought avoidance’ responses. Using genome editing, molecular, physiological and hormone analyses, we examined if drought regulates GA metabolism in tomato (Solanum lycopersicum) guard cells...

article

Bypassing Negative Epistasis on Yield in Tomato Imposed by a Domestication Gene

Sebastian Soyk, Zachary H. Lemmon, Matan Oved, Josef Fisher, more

Cell > 2017 > 169 > 6 > 1142-1155.e12

Selection for inflorescence architecture with improved flower production and yield is common to many domesticated crops. However, tomato inflorescences resemble wild ancestors, and breeders avoided excessive branching because of low fertility. We found branched variants carry mutations in two related transcription factors that were selected independently. One founder mutation enlarged the leaf-like...

article

Monopodial and sympodial branching architecture in cotton is differentially regulated by the Gossypium hirsutum SINGLE FLOWER TRUSS and SELF‐PRUNING orthologs

Roisin C. McGarry, Sarah F. Prewitt, Samantha Culpepper, Yuval Eshed, more

New Phytologist > 212 > 1 > 244 - 258

Domestication of upland cotton (Gossypium hirsutum) converted it from a lanky photoperiodic perennial to a day‐neutral annual row‐crop. Residual perennial traits, however, complicate irrigation and crop management, and more determinate architectures are desired. Cotton simultaneously maintains robust monopodial indeterminate shoots and sympodial determinate shoots. We questioned if and how the...

article

Human–animal interface: The effects of handler's stress on the performance of canines in an explosive detection task

Salman Zubedat, Shlomit Aga-Mizrachi, Adi Cymerblit-Sabba, Jonathan Shwartz, more

Applied Animal Behaviour Science > 2014 > 158 > Complete > 69-75

The handler–dog interaction is significantly important for the canine performance. The handler error may mislead the dog into false identification, and the probability to commit such an error is altered often by the handlers’ stressful state. In the current study we have focused on stress characteristics and the handler–dog interface effects on the canine detection performance. For baseline evaluation,...

article

Meristem maturation and inflorescence architecture—lessons from the Solanaceae

Soon Ju Park, Yuval Eshed, Zachary B Lippman

Current Opinion in Plant Biology > 2014 > 17 > C > 70-77

Plant apical meristems (AMs) grow continuously by delicately balancing cells leaving at the periphery to form lateral organs with slowly dividing central domain cells that replenish reservoirs of pluripotent cells. This balance can be modified by signals originating from within and outside the meristem, and their integration results in a gradual maturation process that often culminates with the meristem...

article

Bridging the gap between the homeopathic world and the conservative medical world – test case in rats

Yakov Freed, Salman Zubedat, Yuval Eshed, Adi Cymerblit-Sabba, more

Homeopathy > 2014 > 103 > 1 > 70

article

A Cytokinin-Activating Enzyme Promotes Tuber Formation in Tomato

Tamar Eviatar-Ribak, Akiva Shalit-Kaneh, Louise Chappell-Maor, Ziva Amsellem, more

Current Biology > 2013 > 23 > 12 > 1057-1064

Dedicated storage organs in the form of tubers are evolutionary novelties that share a common function but originate in diverse species from different organs. Tubers in potato, Solanum tuberosum, are derived from the swollen tips of specialized basal lateral juvenile shoots, called stolons. Lateral buds of tomato, Solanum lycopersicum, a potato sibling species, only form regular shoots. The evo-devo...

article

Regulation of Leaf Maturation by Chromatin-Mediated Modulation of Cytokinin Responses

Idan Efroni, Soon-Ki Han, Hye Jin Kim, Miin-Feng Wu, more

Developmental Cell > 2013 > 24 > 4 > 438-445

Plant shoots display indeterminate growth, while their evolutionary decedents, the leaves, are determinate. Determinate leaf growth is conditioned by the CIN-TCP transcription factors, which promote leaf maturation and are negatively regulated by miR319 in leaf primordia. Here we show that CIN-TCPs reduce leaf sensitivity to cytokinin (CK), a phytohormone implicated in inhibition of differentiation...

article

MicroRNAs Guide Asymmetric DNA Modifications Guiding Asymmetric Organs

Yuval Eshed, John L. Bowman

Developmental Cell > 2004 > 7 > 5 > 629-630

In plants and animals, microRNAs have been shown to regulate target genes by inhibiting translation or altering target mRNA stability. In this issue of Developmental Cell, Bao et al. extend the known mechanisms of action of microRNAs to RNA-directed DNA methylation, a mechanism previously associated only with siRNA-mediated gene silencing.

article

Radial Patterning of Arabidopsis Shoots by Class III HD-ZIP and KANADI Genes

John F. Emery, Sandra K. Floyd, John Alvarez, Yuval Eshed, more

Current Biology > 2003 > 13 > 20 > 1768-1774

Background: Shoots of all land plants have a radial pattern that can be considered to have an adaxial (central)-abaxial (peripheral) polarity. In Arabidopsis, gain-of-function alleles of PHAVOLUTA and PHABULOSA, members of the class III HD-ZIP gene family, result in adaxialization of lateral organs. Conversely, loss-of-function alleles of the KANADI genes cause an adaxialization of lateral organs...

article

Establishment of polarity in angiosperm lateral organs

John L. Bowman, Yuval Eshed, Stuart F. Baum

Trends in Genetics > 2002 > 18 > 3 > 134-141

In seed plants, lateral organs such as leaves and floral organs are formed from the flanks of apical meristems. Therefore, they have an inherent positional relationship: organ primordia have an adaxial side next to the meristem, and an abaxial one away from the meristem. Surgical and genetic studies suggest that a morphogenetic gradient, which originates in the meristem, converts the inherent polarity...

article

Establishment of polarity in lateral organs of plants

Yuval Eshed, Stuart F. Baum, John V. Perea, John L. Bowman

Current Biology > 2001 > 11 > 16 > 1251-1260

Background: Asymmetric development of plant lateral organs initiates by partitioning of organ primordia into distinct domains along their adaxial/abaxial axis. A recent model proposes that a meristem-born signal, acting in a concentration-dependent manner, differentially activates PHABULOSA-like genes, which in turn suppress abaxial-promoting factors. As yet, no abaxial factors have been identified...

article

Formation and maintenance of the shoot apical meristem

John L Bowman, Yuval Eshed

Trends in Plant Science > 2000 > 5 > 3 > 110-115

Development in higher plants is characterized by the reiterative formation of lateral organs from the flanks of shoot apical meristems. Because organs are produced continuously throughout the life cycle, the shoot apical meristem must maintain a pluripotent stem cell population. These two tasks are accomplished within separate functional domains of the apical meristem. These functional domains develop...

article

Distinct Mechanisms Promote Polarity Establishment in Carpels of Arabidopsis

Yuval Eshed, Stuart F. Baum, John L. Bowman

Cell > 1999 > 99 > 2 > 199-209

Lateral organs of plants display asymmetry with abaxial identity being specified by members of the Arabidopsis YABBY gene family. Mutations in CRABS CLAW, the founding family member, display ectopic formation of adaxial carpel tissues only when the functions of other genes, such as GYMNOS or KANADI, are also compromised. Mutations in these genes alone do not result in loss of polar differentiation,...

article

Yield and quality evaluations on a pair of processing tomato lines nearly isogenic for the Tm2a gene for resistance to the tobacco mosaic virus

Steven D. Tanksley, Dario Bernachi, Teresa Beck-Bunn, Davy Emmatty, more

Euphytica > 1998 > 99 > 2 > 77-83

A pair of processing tomato (Lycopersicon esculentum Mill.) lines, nearly isogenic for the Tm-2^a gene for resistance to tobacco mosaic virus, were grown in replicated trials under commercial production conditions in five locations worldwide. The lines were evaluated for 17 processing traits including fruit yield, size, soluble solids concentration, color, firmness, and viscosity. Eight of those traits...

article

The Making of a Compound Leaf: Genetic Manipulation of Leaf Architecture in Tomato

Dana Hareven, Tamar Gutfinger, Ania Parnis, Yuval Eshed, more

Cell > 1996 > 84 > 5 > 735-744

The most distinctive morphogenetic feature of leaves is their being either simple or compound. To study the basis for this dichotomy, we have exploited the maize homeobox-containing Knotted-1 (Kn1) gene in conjunction with mutations that alter the tomato compound leaf. We show that misexpression of Kn1 confers different phenotypes on simple and compound leaves. Up to 2000 leaflets, organized in compound...

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Keywords

MERISTEM (3)
BREEDING (2)
DOMESTICATION (2)
PATTERN FORMATION (2)
STEM CELL (2)
TOMATO (2)
ABSCISIC ACID (ABA) (1)
ADAXIAL-ABAXIAL POLARITY (1)
ANXIETY (1)
ARCHITECTURE (1)
ATTENTION (1)
BRANCHING PATTERN (1)
CANINE (1)
DEVELOPMENT (1)
DROUGHT AVOIDANCE (1)
EPISTASIS (1)
EXPLOSIVE DETECTION (1)
FLOWERING (1)
GENE DOSAGE (1)
GENOME EDITING (1)
GIBBERELLIN (GA) (1)
HANDLER (1)
HETEROSIS (1)
INFLORESCENCE (1)
LEAF (1)
LEAF DEVELOPMENT (1)
LEAF POLARITY (1)
LEAF PRIMORDIUM (1)
LINKAGE DRAG (1)
LYCOPERSICON (1)
MADS-BOX GENE (1)
OVERDOMINANCE (1)
PHOSPHATIDYLETHANOLAMINE BINDING PROTEIN (PEBP) (1)
PHOTOPERIODISM (1)
SIGNALING (1)
STOMATA (1)
STRESS (1)
TRANSPIRATION (1)
WATER DEFICIENCY (1)
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Elsevier (13)
Wiley (2)
Springer (1)

INFONA - science communication portal

Search results for: Yuval Eshed

Inhibition of gibberellin accumulation by water deficiency promotes fast and long‐term ‘drought avoidance’ responses in tomato

Bypassing Negative Epistasis on Yield in Tomato Imposed by a Domestication Gene

Monopodial and sympodial branching architecture in cotton is differentially regulated by the Gossypium hirsutum SINGLE FLOWER TRUSS and SELF‐PRUNING orthologs

Human–animal interface: The effects of handler's stress on the performance of canines in an explosive detection task

Meristem maturation and inflorescence architecture—lessons from the Solanaceae

Bridging the gap between the homeopathic world and the conservative medical world – test case in rats

A Cytokinin-Activating Enzyme Promotes Tuber Formation in Tomato

Regulation of Leaf Maturation by Chromatin-Mediated Modulation of Cytokinin Responses

MicroRNAs Guide Asymmetric DNA Modifications Guiding Asymmetric Organs

Radial Patterning of Arabidopsis Shoots by Class III HD-ZIP and KANADI Genes

Establishment of polarity in angiosperm lateral organs

Establishment of polarity in lateral organs of plants

Formation and maintenance of the shoot apical meristem

Distinct Mechanisms Promote Polarity Establishment in Carpels of Arabidopsis

Yield and quality evaluations on a pair of processing tomato lines nearly isogenic for the Tm2a gene for resistance to the tobacco mosaic virus

The Making of a Compound Leaf: Genetic Manipulation of Leaf Architecture in Tomato

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