Strigolactones affect tomato hormone profile and somatic embryogenesis.
Yuanli Wu1, Evgenia Dor2, Joseph Hershenhorn1
1Department of Phytopathology and Weed Research, Agricultural Research Organization (ARO), Newe Ya'ar Research Center, P.O. Box 1021, 30095, Ramat Yishay, Israel.
Planta
|December 3, 2016
Summary
Strigolactones (SLs) influence tomato somatic embryogenesis by interacting with auxin and cytokinin hormones. This study reveals SLs
Area of Science:
- Plant Biology
- Hormone Signaling
- Developmental Biology
Background:
- Strigolactones (SLs) are plant hormones known to interact with auxins, influencing plant development.
- The role of SLs in somatic embryogenesis and morphogenesis is not well understood.
- Auxins are critical for plant reproductive development and embryo formation.
Purpose of the Study:
- To investigate the role of strigolactones in tomato somatic embryogenesis and morphogenesis.
- To understand the cross-talk between strigolactones, auxins, and cytokinins during embryogenesis.
- To analyze the effect of exogenous strigolactones on hormone profiles in tomato mutants.
Main Methods:
- Utilized tomato cv. M82 and its strigolactone-deficient mutant SL-ORT1.
- Applied synthetic strigolactone GR24 to study its effects on somatic embryogenesis (SE) and adventitious root formation.
- Analyzed hormone profiles in tomato roots and shoots.
Main Results:
- Exogenous GR24 differentially affected somatic embryo formation in M82 and SL-ORT1.
- Strigolactone application influenced the hormone profiles in tomato roots and shoots.
- Evidence suggests strigolactones modulate the auxin-to-cytokinin ratio during somatic embryogenesis.
Conclusions:
- Strigolactones are involved in the regulation of somatic embryogenesis and morphogenesis in tomato.
- SLs interact with auxins and cytokinins, indicating a hormonal cross-talk mechanism.
- The findings highlight the importance of SLs in plant developmental processes beyond their known roles in auxin transport.
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