These findings suggested that additional components rather than Pleiotropic Drug Resistance 1 may be involved in SLs transport in Arabidopsis
2021
Key concepts
- plant growth
- Hordeum vulgare
- Petunia hybrida
- ATP-binding cassette
- Lotus japonicus
- root hair
- crop yield
- parasitic plant
- plant hormone
- adventitious roots
- Solanum lycopersicum
- strigolactones
- Malus domestica
- MDPI
- biosynthesis
- polar auxin transport
- Arbuscular mycorrhizal
- Production of Anthocyanin Pigment 1
- abscisic acid
- seed germination
- transition zone
- bimolecular fluorescence complementation
- lateral root
- Salicylic Acid
- Arabidopsis thaliana
- Gibberellic Acid
- plant species
- A. thaliana
- root-knot nematodes
- arbuscular mycorrhizal fungi
- hormones
- Pisum sativum
Scholarcy highlights
- Published: 1 November 2021Plant hormones, known as phytohormones, are chemicals produced in very low concentrations to regulate the growth of almost all plant species
- This newly defined phytohormone was discovered by the research of the parasitic plant Striga lutea in the 1960s; the witchweed used the SLs as a signal to initiate germination from the roots of host plants for survival due to the lack of photosynthetic capabilities
- In Arabidopsis, mycorrhization is absent due to the absence of a transporter protein compared to the production and signaling components. These findings suggested that additional components rather than Pleiotropic Drug Resistance 1 may be involved in SLs transport in Arabidopsis
- The repression of a key enzyme in the production of bioactive Gibberellic Acid, gibberellin 3-oxidase2, was significantly decreased at 32 ◦ C compared to the levels at the optimal temperature, and treatment with GR24 suppressed the transcript abundance of 9-cis-epoxycarotenoid dioxygenase9, one of the key enzymes for abscisic acid biosynthesis in seeds, similar to those seen at 24 ◦ C
- Lateral root development, and adventitious rooting are all thought to be regulated by SLs; because of the interaction with other phytohormones, the nature of these actions differs across species and growth conditions
- Striga species infest maize, rice, sorghum, and millet crops across Africa, lowering maize yields up to 80% in heavily infested fields and generating significant loss and food insecurity
- Stress may have an impact on SL biosynthesis, signaling, and crosstalk with other plant hormones
- With respect to SL biosynthesis, several hints have recently been reported but the bioactive form of SLs that regulates various aspects of plant growth and development is still uncertain
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