Aquaporins influence seed dormancy and germination in response to stress.

08:00 EDT 15th April 2019 | BioPortfolio

Summary of "Aquaporins influence seed dormancy and germination in response to stress."

Aquaporins influence water flow in plants, yet little is known of their involvement in the water-driven process of seed germination. We therefore investigated their role in seeds in the laboratory and under field and global warming conditions. We mapped the expression of tonoplast intrinsic proteins (TIP) during dormancy cycling and during germination under normal and water stress conditions. We found that the two key tonoplast aquaporins, TIP3;1 and TIP3;2, which have previously been implicated in water or solute transport, respectively, act antagonistically to modulate the response to abscisic acid, with TIP3;1 being a positive and TIP3;2 a negative regulator. A third isoform, TIP4;1, which is normally expressed upon completion of germination, was found to play an earlier role during water stress. Seed TIP also contribute to the regulation of depth of primary dormancy and differences in the induction of secondary dormancy during dormancy cycling. Protein and gene expression during annual cycling under field conditions and a global warming scenario further illustrate this role. We propose that the different responses of the seed TIP contribute to mechanisms that influence dormancy status and the timing of germination under variable soil conditions.


Journal Details

This article was published in the following journal.

Name: Plant, cell & environment
ISSN: 1365-3040


DeepDyve research library

PubMed Articles [18577 Associated PubMed Articles listed on BioPortfolio]

Seed Cryostorage Enhances Subsequent Plant Productivity in the Forage Species Teramnus Labialis (L.F.) Spreng.

Teramnus labialis is an herbaceous legume that serves as a source of carbohydrates and proteins for animals and humans, and is valued for its nitrogen contribution to soil. The benefits of this specie...

A quantitative trait locus, qSE3, promotes seed germination and seedling establishment under salinity stress in rice.

Seed germination is a complex trait determined by both quantitative trait loci (QTLs) and environmental factors and also their interactions. In this study, we mapped one major QTL qSE3 for seed germin...

Fire and legume germination in a tropical savanna: ecological and historical factors.

In many flammable ecosystems, physically dormant seeds show dormancy-break patterns tied to fire, but the link between heat shock and germination in the tropical savannas of Africa and South America r...

Can the environment have a genetic basis? A case study of seedling establishment in Arabidopsis thaliana.

The timing of seed germination determines the environment experienced by a plant's most vulnerable life stage-the seedling. Germination is environmentally cued, and genotypes can differ in their sensi...

Allelopathic effects of Canada goldenrod leaf extracts on the seed germination and seedling growth of lettuce reinforced under salt stress.

Allelopathic effects on the seed germination and seedling growth of the natives play a crucial role in the successful invasion of numerous invaders. Meanwhile, soil salinity is an emerging driver of t...

Clinical Trials [7882 Associated Clinical Trials listed on BioPortfolio]

Comparison Between IV Propofol and Propofol/ Fentanyl Anesthesia on Patients Stress Response

It is hypothesized that propofol, when used in general anesthesia (GA) influence patient's stress status and consequently affect stress response parameters. Hence, the objective of the pre...

The Effect of Grape Seed Extract on Blood Pressure in People With Pre-Hypertension

In this research study, the investigators are interested in learning how extracts from grape seeds can help those individuals with high blood pressure. The investigators also hope to learn...

Treatment of Bronchial Asthma With Borage and Echium Seed Oils

The aim of this trial is to determine the efficacy of a combination of two botanicals oils, borage seed oil and echium seed oil, as a potential treatment for bronchial asthma.

The Effect of Grape Seed Extract on Estrogen Levels of Postmenopausal Women

The role of estrogens in the pathogenesis of breast cancer has been well documented. This has led to the development of "Anti-Estrogens" (selective estrogens receptor modulators and Aromat...

Golden Black Seed: Support of Metabolic Health and General Wellness.

To document effects of consuming Golden Black Seed (brand: New Chapter Inc.) on metabolic health and wellness in human subjects. Golden Black Seed contains extracts from the turmeric root...

Medical and Biotech [MESH] Definitions

The state of failure to complete the process of GERMINATION of an intact viable seed, due to intrinsic physical, molecular, genetic, or physiological parameters under otherwise favourable prevailing conditions.

The initial stages of the growth of SEEDS into a SEEDLING. The embryonic shoot (plumule) and embryonic PLANT ROOTS (radicle) emerge and grow upwards and downwards respectively. Food reserves for germination come from endosperm tissue within the seed and/or from the seed leaves (COTYLEDON). (Concise Dictionary of Biology, 1990)

One or more types of plant seed proteins providing the large amounts of AMINO ACIDS utilized in GERMINATION and SEEDLING growth. As seeds are the major food source from AGRICULTURAL CROPS, seed storage proteins are a major source of DIETARY PROTEINS.

A thioredoxin subtype that is ubiquitously found in the plant kingdom. It reduces a variety of seed storage proteins and may play a role in the germination process of seeds.

A part of the embryo in a seed plant. The number of cotyledons is an important feature in classifying plants. In seeds without an endosperm, they store food which is used in germination. In some plants, they emerge above the soil surface and become the first photosynthetic leaves. (From Concise Dictionary of Biology, 1990)

Quick Search


DeepDyve research library

Relevant Topics

Stress is caused by your perception of situations around you and then the reaction of your body to them. The automatic stress response to unexpected events is known as 'fight or flight'. Discovered by Walter Cannon in 1932, it is the release of h...

Mental Health
Adhd Anorexia Depression Dyslexia Mental Health Psychiatry Schizophrenia Stress Mental health, although not being as obvious as physical health, is very important, causing great unhappiness to those affected, causing add...

Searches Linking to this Article