Articles
RESEARCH ADVANCEMENTS ON BIOLOGICAL FUNCTIONS OF STRIGOLACTONES
Article number
938_7
Pages
63 – 68
Language
English
Abstract
Strigolactones are a group of closely related sesquiterpenes that are derived from carotenoids and synthesized in the roots of most land plants, including mono-cotyledons and the dicotyledons.
Previous research suggests that strigolactones are the principal plant-derived signals that trigger seed germination of the parasitic plants Striga and Orobanche. Strigolactones are also thought to be important in arbuscular mycorrhizal symbiosis.
They are considered an early host-plant recognition signal that parasitic plants and symbiotic fungi use to discover the presence of host plants.
Furthermore, recent data have demonstrated that strigolactones can act as hormonal signals to inhibit bud outgrowth and shoot branching.
Strigolactones may act downstream of auxin and control the phenotype together with auxin and cytokinin.
Moreover, synthesis of strigolactones is regulated by nutrition level.
In particular, phosphate starvation can stimulate their synthesis and expedite their release, thus improving the nutritional status of plants by accelerating fungal hyphae branching and symbiosis with plants during excretion into the soil or repress branching.
This process saves energy during transport to the stem.
These discoveries will lead to the commercial use of strigolactones in forestry, crop science and especially in horticulture.
The commercial application of strigolactones may enhance plant growth and development, improve production efficiencies by saving labor, increasing production, and reducing disease.
Previous research suggests that strigolactones are the principal plant-derived signals that trigger seed germination of the parasitic plants Striga and Orobanche. Strigolactones are also thought to be important in arbuscular mycorrhizal symbiosis.
They are considered an early host-plant recognition signal that parasitic plants and symbiotic fungi use to discover the presence of host plants.
Furthermore, recent data have demonstrated that strigolactones can act as hormonal signals to inhibit bud outgrowth and shoot branching.
Strigolactones may act downstream of auxin and control the phenotype together with auxin and cytokinin.
Moreover, synthesis of strigolactones is regulated by nutrition level.
In particular, phosphate starvation can stimulate their synthesis and expedite their release, thus improving the nutritional status of plants by accelerating fungal hyphae branching and symbiosis with plants during excretion into the soil or repress branching.
This process saves energy during transport to the stem.
These discoveries will lead to the commercial use of strigolactones in forestry, crop science and especially in horticulture.
The commercial application of strigolactones may enhance plant growth and development, improve production efficiencies by saving labor, increasing production, and reducing disease.
Authors
Feng Dan, Chen Guilin
Keywords
hormone, shoot branching, parasitism, symbiosis, germination stimulant
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