Lamis Berqdar
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View article: Structural substitutions on the methoxybenzene ring retain the biological activity of the zaxinone mimics MiZax3
Structural substitutions on the methoxybenzene ring retain the biological activity of the zaxinone mimics MiZax3 Open
The plant growth regulator zaxinone is essential for proper rice growth and development. Additionally, zaxinone and its two synthetic mimics, MiZax3 and MiZax5, have been shown to significantly promote crop growth and reduce infestation by…
View article: Disruption of the karrikin receptor <i>DWARF 14 LIKE</i> (<i>D14L</i>) gene leads to distinct effects on root and shoot growth, and reprogramming of central metabolism in rice
Disruption of the karrikin receptor <i>DWARF 14 LIKE</i> (<i>D14L</i>) gene leads to distinct effects on root and shoot growth, and reprogramming of central metabolism in rice Open
The rice (Oryza sativa L.) α/β-hydrolase D14 LIKE (D14L), a paralog of the strigolactone receptor D14, is essential for the establishment of arbuscular mycorrhizal (AM) symbiosis and responses to karrikins, smoke-derived compounds that reg…
View article: Development of a Rapid and Efficient Protocol for Seed Germination and Seedling Establishment of <em>Oryza coarctata</em>
Development of a Rapid and Efficient Protocol for Seed Germination and Seedling Establishment of <em>Oryza coarctata</em> Open
Seed germination is a critical and challenging process in the propagation of Oryza coarctata, a wild halophytic rice species. This protocol outlines the seed germination procedure for O. coarctata. All steps required for optimal germinatio…
View article: <i>Zaxinone Synthase</i> overexpression modulates rice physiology and metabolism, enhancing nutrient uptake, growth and productivity
<i>Zaxinone Synthase</i> overexpression modulates rice physiology and metabolism, enhancing nutrient uptake, growth and productivity Open
The rice Zaxinone Synthase (ZAS) gene encodes a carotenoid cleavage dioxygenase (CCD) that forms the apocarotenoid growth regulator zaxinone in vitro. Here, we generated and characterized constitutive ZAS ‐overexpressing rice lines, to bet…
View article: Chromosome-scale pearl millet genomes reveal a<i>CARLACTONOIC ACID METHYL TRANSFERASE</i>as key determinant of strigolactone pattern and Striga susceptibility
Chromosome-scale pearl millet genomes reveal a<i>CARLACTONOIC ACID METHYL TRANSFERASE</i>as key determinant of strigolactone pattern and Striga susceptibility Open
The yield of pearl millet, a resilient cereal crop crucial for African food security, is severely impacted by the root parasitic weed Striga hermonthica, which requires host-released strigolactones (SLs) for seed germination. Herein, we id…
View article: Strigolactone biosynthesis in rice can occur via a 9‐<i>cis</i>‐3‐OH‐10′‐apo‐β‐carotenal intermediate
Strigolactone biosynthesis in rice can occur via a 9‐<i>cis</i>‐3‐OH‐10′‐apo‐β‐carotenal intermediate Open
Strigolactones (SLs) play a crucial role in regulating plant architecture and mediating rhizosphere interactions. They are synthesized from all‐ trans ‐β‐carotene converted into the intermediate carlactone (CL) via the intermediate 9‐ cis …
View article: Abscisic acid inhibits germination of Striga seeds and is released by them likely as a rhizospheric signal supporting host infestation
Abscisic acid inhibits germination of Striga seeds and is released by them likely as a rhizospheric signal supporting host infestation Open
SUMMARY Seeds of the root parasitic plant Striga hermonthica undergo a conditioning process under humid and warm environments before germinating in response to host‐released stimulants, particularly strigolactones (SLs). The plant hormone …
View article: Zaxinone mimics (MiZax) efficiently promote growth and production of potato and strawberry plants under desert climate conditions
Zaxinone mimics (MiZax) efficiently promote growth and production of potato and strawberry plants under desert climate conditions Open
Climate changes and the rapid expanding human population have become critical concerns for global food security. One of the promising solutions is the employment of plant growth regulators (PGRs) for increasing crop yield and overcoming ad…
View article: Disruption of the rice <i>4-DEOXYOROBANCHOL HYDROXYLASE</i> unravels specific functions of canonical strigolactones
Disruption of the rice <i>4-DEOXYOROBANCHOL HYDROXYLASE</i> unravels specific functions of canonical strigolactones Open
Strigolactones (SLs) regulate many developmental processes, including shoot-branching/tillering, and mediate rhizospheric interactions. SLs originate from carlactone (CL) and are structurally diverse, divided into a canonical and a noncano…
View article: <i>Zaxinone Synthase</i>overexpression modulates rice physiology and metabolism, improving growth and productivity under normal and low phosphate supply
<i>Zaxinone Synthase</i>overexpression modulates rice physiology and metabolism, improving growth and productivity under normal and low phosphate supply Open
The rice Zaxinone Synthase (ZAS) gene encodes a carotenoid cleavage dioxygenase (CCD) that forms the apocarotenoid growth regulator zaxinone. Here, we generated and characterized constitutive ZAS -overexpressing rice lines, to better under…
View article: Strigolactone biosynthesis <i>lgs1</i> mutant alleles mined from the sorghum accession panel are a promising resource of resistance to witchweed (<i>Striga</i>) parasitism
Strigolactone biosynthesis <i>lgs1</i> mutant alleles mined from the sorghum accession panel are a promising resource of resistance to witchweed (<i>Striga</i>) parasitism Open
Societal Impact Statement Striga is a parasitic plant that greatly limits the production of Africa's most staple cereals, including sorghum. Infection occurs when the parasite germinates in response to biomolecules emitted into the soil fr…
View article: New Series of Zaxinone Mimics (MiZax) for Fundamental and Applied Research
New Series of Zaxinone Mimics (MiZax) for Fundamental and Applied Research Open
The apocarotenoid zaxinone is a recently discovered regulatory metabolite required for proper rice growth and development. In addition, zaxinone and its two mimics (MiZax3 and MiZax5) were shown to have a remarkable growth-promoting activi…
View article: Abscisic acid inhibits germination of Striga seeds and is released by them as a rhizospheric signal providing competitive advantage and supporting host infestation
Abscisic acid inhibits germination of Striga seeds and is released by them as a rhizospheric signal providing competitive advantage and supporting host infestation Open
SUMMARY Seeds of the root parasitic plant Striga hermonthica undergo a conditioning process under humid and warm environments before germinating in response to host-released stimulants, particularly strigolactones (SLs). The plant hormone …
View article: Cytokinins as an alternative suicidal Striga germination compound
Cytokinins as an alternative suicidal Striga germination compound Open
The witchweed Striga hermonthica , an obligate and noxious root–parasitic plant, remains a persistent threat to cereal production and poses a great challenge to smallholder farmers in Sub‐Saharan Africa. Inducing suicidal germination of St…
View article: Disruption of the rice<i>4-DEOXYOROBANCHOL HYDROXYLASE</i>unravels specific functions of canonical strigolactones
Disruption of the rice<i>4-DEOXYOROBANCHOL HYDROXYLASE</i>unravels specific functions of canonical strigolactones Open
Strigolactones (SLs) regulate many developmental processes, including shoot-branching/tillering, and mediate rhizospheric interactions. SLs are structurally diverse, divided into a canonical and a non-canonical sub-family. To better unders…
View article: Zaxinone Mimics (MiZax) Efficiently Promote Growth and Production of Potato and Strawberry Plants under Desert Climate Conditions
Zaxinone Mimics (MiZax) Efficiently Promote Growth and Production of Potato and Strawberry Plants under Desert Climate Conditions Open
Climate changes and the rapid expanding human population have become critical concerns for global food security. One of the promising solutions is the employment of plant growth regulators (PGRs) for increasing crop yield and overcoming ad…
View article: Harnessing the strigolactone biosynthesis mutant lgs1 to combat food insecurity in Africa
Harnessing the strigolactone biosynthesis mutant lgs1 to combat food insecurity in Africa Open
Sorghum is a food staple for millions of people in sub-Saharan Africa, but parasitic weeds of the Striga genus greatly diminish its production. An efficient and cost-effective way of managing Striga in smallholder farms in Africa is to dep…
View article: Perspectives on the metabolism of strigolactone rhizospheric signals
Perspectives on the metabolism of strigolactone rhizospheric signals Open
Strigolactones (SLs) are a plant hormone regulating different processes in plant development and adjusting plant’s architecture to nutrition availability. Moreover, SLs are released by plants to communicate with beneficial fungi in the rhi…
View article: Canonical strigolactones are not the major determinant of tillering but important rhizospheric signals in rice
Canonical strigolactones are not the major determinant of tillering but important rhizospheric signals in rice Open
Strigolactones (SLs) are a plant hormone inhibiting shoot branching/tillering and a rhizospheric, chemical signal that triggers seed germination of the noxious root parasitic plant Striga and mediates symbiosis with beneficial arbuscular m…
View article: <i>ZAXINONE SYNTHASE 2</i> regulates growth and arbuscular mycorrhizal symbiosis in rice
<i>ZAXINONE SYNTHASE 2</i> regulates growth and arbuscular mycorrhizal symbiosis in rice Open
Carotenoid cleavage, catalyzed by CAROTENOID CLEAVAGE DIOXYGENASEs (CCDs), provides signaling molecules and precursors of plant hormones. Recently, we showed that zaxinone, a apocarotenoid metabolite formed by the CCD ZAXINONE SYNTHASE (ZA…
View article: <i>ZAXINONE SYNTHASE 2</i> regulates growth and arbuscular mycorrhizal symbiosis in rice
<i>ZAXINONE SYNTHASE 2</i> regulates growth and arbuscular mycorrhizal symbiosis in rice Open
Carotenoid cleavage, catalyzed by CAROTENOID CLEAVAGE DIOXYGENASES (CCDs), provides signaling molecules and precursors of plant hormones. Recently, we showed that zaxinone, a novel apocarotenoid metabolite formed by the CCD Zaxinone Syntha…
View article: Evaluation of the Biostimulant Activity of Zaxinone Mimics (MiZax) in Crop Plants
Evaluation of the Biostimulant Activity of Zaxinone Mimics (MiZax) in Crop Plants Open
Global food security is a critical concern that needs practical solutions to feed the expanding human population. A promising approach is the employment of biostimulants to increase crop production. Biostimulants include compounds that boo…
View article: Striga hermonthica Suicidal Germination Activity of Potent Strigolactone Analogs: Evaluation from Laboratory Bioassays to Field Trials
Striga hermonthica Suicidal Germination Activity of Potent Strigolactone Analogs: Evaluation from Laboratory Bioassays to Field Trials Open
The obligate hemiparasite Striga hermonthica is one of the major global biotic threats to agriculture in sub-Saharan Africa, causing severe yield losses of cereals. The germination of Striga seeds relies on host-released signaling molecule…
View article: Canonical Strigolactones Are Not the Tillering-Inhibitory Hormone but Rhizospheric Signals in Rice
Canonical Strigolactones Are Not the Tillering-Inhibitory Hormone but Rhizospheric Signals in Rice Open
The plant hormones strigolactones (SLs) regulate shoot branching and mediate the communication with symbiotic mycorrhizal fungi, but also with noxious root parasitic weeds, such as Striga spp. SLs derive from carlactone (CL) and are divide…
View article: A New Formulation for Strigolactone Suicidal Germination Agents, towards Successful Striga Management
A New Formulation for Strigolactone Suicidal Germination Agents, towards Successful Striga Management Open
Striga hermonthica, a member of the Orobanchaceae family, is an obligate root parasite of staple cereal crops, which poses a tremendous threat to food security, contributing to malnutrition and poverty in many African countries. Depleting …