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A role for ethylene in low-oxygen signaling in rice roots.

We found that MHZ5 encodes a carotenoid isomerase and that the mutation in mhz5 blocks carotenoid biosynthesis, reduces ABA accumulation, and promotes ethylene production in etiolated seedlings.

05/12/2016 · A role for ethylene in low-oxygen signaling in rice roots

Ethylene and abscisic acid (ABA) act synergistically or antagonistically to regulate plant growth and development. ABA is derived from the carotenoid biosynthesis pathway. Here, we analyzed the interplay among ethylene, carotenoid biogenesis, and ABA in rice (Oryza sativa) using the rice ethylene response mutant mhz5, which displays a reduced ethylene response in roots but an enhanced ethylene response in coleoptiles. We found that MHZ5 encodes a carotenoid isomerase and that the mutation in

Inhibitors of action and synthesis of ethylene (Ag ..

Genetic studies revealed that the MHZ5-mediated ABA pathway acts downstream of ethylene signaling to inhibit root growth.

From Jasminum grandiflorum (royal jasmine)Methyl jasmonate (MeJA) is a substance used in plant defense and also under early research for cancer treatment in humans.

Plants produce jasmonic acid and methyl jasmonate in response to many biotic and abiotic stresses (particularly herbivory and wounding), which build up in the damaged parts of the plant.

suggests that ethylene (ET) biosynthesis is important for rice ..

The MHZ5-mediated ABA pathway likely acts upstream but negatively regulates ethylene signaling to control coleoptile growth.

Understanding the mechanism of high-temperature stress (heat) tolerance during the plant reproductive phase is important for developing heat tolerant cultivars in lentil. We found a higher reduction in pollen viability and lower photosynthetic electron transport rate in heat sensitive genotypes and a functional marker amplified only in heat tolerant ones. We conclude that these traits and the associated functional markers will be useful in lentil breeding.

Chilling stress limits the productivity and geographical distribution of many plants throughout the world. Accumulation of the endoplasmic reticulum-located small heat shock protein HSP22.5 enhanced photochemical activity and oxidation resistance and alleviated endoplasmic reticulum stress caused by chilling stress in transgenic tobacco plants. HSP22.5 could be useful for improving the tolerance of chilling-sensitive plant types.

Activation of ethylene signaling pathways enhances …
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Ecker JR Ethylene biosynthesis and signaling ..

Here, we analyzed the interplay among ethylene, carotenoid biogenesis, and ABA in rice (Oryza sativa) using the rice ethylene response mutant mhz5, which displays a reduced ethylene response in roots but an enhanced ethylene response in coleoptiles.

Ethylene biosynthesis yang-cycle

Our study reveals novel interactions among ethylene, carotenogenesis, and ABA and provides insight into improvements in agronomic traits and adaptive growth through the manipulation of these pathways in rice.

Interactions between plant hormones and heavy metals …

Environmental stresses are main causes for low agricultural productivity. At the cellular level, stresses induce generation of reactive oxygen species (ROS), ion disequilibrium, autophagy and programmed cell death (PCD). Here we propose that these processes interact and that ROS and ion disequilibrium are triggers of autophagy and PCD. Overall, presented data contribute to understanding plant stress physiology.

State Key Laboratory of Plant Physiology and Biochemistry

Work started by Shang Fa Yang in the late 1970s bore fruit in the 1980s as the pathway for biosynthesis of ethylene gas became known. The Yang cycle. Chapter 1 Ethylene Biosynthesis and Regulation in Plants Juan Xu and Shuqun Zhang Abstract Ethylene,agaseousplanthormone,influencesplantgrowth,development,

Annual Review of Plant Biology | Home

Potato is a high nitrogen-responsive crop, hence improving nitrogen use efficiency (NUE) of plant is important to reduce production cost and minimize environmental loss. Potato is a less studied crop especially at plant level with enhanced NUE. This review highlights translation of advanced NUE research from other plants like , rice, wheat and maize applying integrated genomics, physiology and breeding approaches.

Molecular Plant - Home: Cell Press

Sustaining plant productivity under microgravity conditions is a prerequisite for successful colonisation of space by humans. Therefore, we address the effects of simulated microgravity on seed germination and the first steps of seedling development at the total proteome level. This study complements a large body of transcriptomic data and gives an insight into gravity-related changes in early plant ontogenesis.

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