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Endogenous gibberellin and abscisic Acid content as related to senescence of detached lettuce leaves.

• Noa Aharoni
• Plant physiology
• 1978

Levels of gibberillins (GAs) and of abscisic acid (ABA) in attached leaves of romaine lettuce (Lactuca sativa L.) declined as the leaf became older. The time course of changes in hormone levels,… (More)

Production and action of ethylene in senescing leaf discs: effect of indoleacetic Acid, kinetin, silver ion, and carbon dioxide.

• Noa Aharoni, J. D. Anderson, Michael A. Lieberman
• Plant physiology
• 1979

Supraoptimal concentrations of indoleacetic acid (IAA) stimulated ethylene production, which in turn appeared to oppose the senescence-retarding effect of IAA in tobacco leaf discs. Kinetin acted… (More)

Patterns of ehtylene production in senescing leaves.

• Noa Aharoni, Michael A. Lieberman
• Plant physiology
• 1979

Changes in the patterns of ethylene production, chlorophyll content, and respiration were studied in relation to the senescence of intact leaves and leaf discs. The primary leaves of pinto bean,… (More)

Migrating locusts can detect polarized reflections to avoid flying over the sea.

• Nadav Shashar, Shereen Sabbah, Noa Aharoni
• Biology letters
• 2005

The desert locust Schistocerca gregaria is a well known migrating insect, travelling long distances in swarms containing millions of individuals. During November 2004, such a locust swarm reached the… (More)

Carbohydrates stimulate ethylene production in tobacco leaf discs : I. Interaction with auxin and the relation to auxin metabolism.

• Shimon Bar Meir, Sonia Philosoph-Hadas, Eric Epstein, Noa Aharoni
• Plant physiology
• 1985

Various naturally occurring carbohydrates, applied at a concentration range of 1 to 100 mm, stimulated ethylene production for several days in indoleacetic acid (IAA)-treated or untreated tobacco… (More)

Galactose inhibits the conversion of 1-aminocyclopropane-1-carboxylic Acid to ethylene in aged tobacco leaf discs.

• Sonia Philosoph-Hadas, Noa Aharoni
• Plant physiology
• 1987

d-Galactose has been shown to have toxic and growth inhibitory effects in plants. When applied at levels of 50 millimolar to tobacco (Nicotiana tabacum L. cv Xanthi) leaf discs galactose caused a… (More)

Auxin-induced ethylene production as related to auxin metabolism in leaf discs of tobacco and sugar beet.

• Noa Aharoni, S. F. Yang
• Plant physiology
• 1983

Exogenously supplied indole-3-acetic acid (IAA) stimulated ethylene production in tobacco (Nicotiana glauca) leaf discs but not in those of sugar beet (Beta vulgaris L.). The stimulatory effect of… (More)

Hormonal activity in detached lettuce leaves as affected by leaf water content.

• Noa Aharoni, Anat Blumenfeld, Amos E. Richmond
• Plant physiology
• 1977

The interrelationship between water deficiency and hormonal makeup in plants was investigated in detached leaves of romaine lettuce (Lactuca sativa L. cv. ;Hazera Yellow'). Water stress was imposed… (More)

Carbohydrates Stimulate Ethylene Production in Tobacco Leaf Discs : II. Sites of Stimulation in the Ethylene Biosynthesis Pathway.

• Sonia Philosoph-Hadas, Shimon Bar Meir, Noa Aharoni
• Plant physiology
• 1985

Galactose, sucrose, and glucose (50 millimolar) applied to tobacco leaf discs (Nicotiana tabacum L. cv ;Xanthi') during a prolonged incubation (5-6 d) markedly stimulated ethylene production which,… (More)

Carbon dioxide enhances the development of the ethylene forming enzyme in tobacco leaf discs.

• Sonia Philosoph-Hadas, Noa Aharoni, S. F. Yang
• Plant physiology
• 1986

Since CO(2) is known to stimulate ethylene production by promoting the conversion of 1-aminocyclopropane-1-carboxylic acid (ACC) to ethylene, the effect of CO(2) on the activity and the development… (More)

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