4 research outputs found

    Inhibitors of tyrosine kinases and phosphatases as a tool for the investigation of microtubule role in plant cold response

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    Tyrosine phosphorylation plays a vital role in the variety of signal transduction pathways in eukaryotic cells, however its role and relevance in plants are still largely unknown. To investigate the functional role of tubulin tyrosine phosphorylation in plant cells the interplay between the effects of tyrosine kinases (herbimycin A) as well as tyrosine phosphatases (sodium orthovanadate) inhibitors on microtubules sensitivity to cold in A. thaliana root cells were studied. Since it was found that inhibition of tyrosine kinases significantly increased the microtubules sensitivity to cold, while inhibition of tyrosine phophatases enhanced their cold-resistance, we suggest an existence of certain functional interaction between the phosphorylation on tyrosine residues and sensitivity of cortical microtubules to low temperatures.ЀосфорилированиС остатков Ρ‚ΠΈΡ€ΠΎΠ·ΠΈΠ½Π° являСтся Π²Π°ΠΆΠ½Ρ‹ΠΌ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚ΠΎΠΌ ΡΠΈΠ³Π½Π°Π»ΡŒΠ½Ρ‹Ρ… каскадов Π² эукариотичСских ΠΊΠ»Π΅Ρ‚ΠΊΠ°Ρ…, ΠΎΠ΄Π½Π°ΠΊΠΎ Π΅Π³ΠΎ Ρ€ΠΎΠ»ΡŒ ΠΈ Π·Π½Π°Ρ‡ΠΈΠΌΠΎΡΡ‚ΡŒ Π² растСниях остаСтся практичСски нСизвСстной. Для Ρ‚ΠΎΠ³ΠΎ Ρ‡Ρ‚ΠΎΠ±Ρ‹ Π²Ρ‹ΡΡΠ½ΠΈΡ‚ΡŒ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½ΡƒΡŽ Ρ€ΠΎΠ»ΡŒ тирозинфосфорилирования Ρ‚ΡƒΠ±ΡƒΠ»ΠΈΠ½Π° Π² Ρ€Π°ΡΡ‚ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠΉ ΠΊΠ»Π΅Ρ‚ΠΊΠ΅, исслСдовали взаимосвязь ΠΌΠ΅ΠΆΠ΄Ρƒ влияниСм ΠΈΠ½Π³ΠΈΠ±ΠΈΡ‚ΠΎΡ€Π° Ρ‚ΠΈΡ€ΠΎΠ·ΠΈΠ½ΠΊΠΈΠ½Π°Π· (Π³Π΅Ρ€Π±ΠΈΠΌΠΈΡ†ΠΈΠ½Π° А) ΠΈ тирозинфосфатаз (ΠΎΡ€Ρ‚ΠΎΠ²Π°Π½Π°Π΄Π°Ρ‚Π° натрия) ΠΈ Ρ‡ΡƒΠ²ΡΡ‚Π²ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΡŒΡŽ ΠΌΠΈΠΊΡ€ΠΎΡ‚Ρ€ΡƒΠ±ΠΎΡ‡Π΅ΠΊ Π² ΠΊΠ»Π΅Ρ‚ΠΊΠ°Ρ… корня A. thaliana ΠΊ Π΄Π΅ΠΉΡΡ‚Π²ΠΈΡŽ Ρ…ΠΎΠ»ΠΎΠ΄Π°. ΠŸΠΎΡΠΊΠΎΠ»ΡŒΠΊΡƒ Π±Ρ‹Π»ΠΎ выявлСно, Ρ‡Ρ‚ΠΎ ΠΈΠ½Π³ΠΈΠ±ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ Ρ‚ΠΈΡ€ΠΎΠ·ΠΈΠ½ΠΊΠΈΠ½Π°Π· Π·Π½Π°Ρ‡ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ ΡƒΠ²Π΅Π»ΠΈΡ‡ΠΈΠ²Π°Π΅Ρ‚ Ρ‡ΡƒΠ²ΡΡ‚Π²ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ ΠΌΠΈΠΊΡ€ΠΎΡ‚Ρ€ΡƒΠ±ΠΎΡ‡Π΅ΠΊ ΠΊ Ρ…ΠΎΠ»ΠΎΠ΄Ρƒ, Π° ΠΈΠ½Π³ΠΈΠ±ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ тирозинфосфатаз ΠΏΠΎΠ²Ρ‹ΡˆΠ°Π΅Ρ‚ ΠΈΡ… Ρ…ΠΎΠ»ΠΎΠ΄ΠΎΡƒΡΡ‚ΠΎΠΉΡ‡ΠΈΠ²ΠΎΡΡ‚ΡŒ, ΠΌΡ‹ ΠΏΡ€Π΅Π΄ΠΏΠΎΠ»Π°Π³Π°Π΅ΠΌ Π½Π°Π»ΠΈΡ‡ΠΈΠ΅ ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Π½ΠΎΠΉ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠΉ взаимосвязи ΠΌΠ΅ΠΆΠ΄Ρƒ фосфорилированиСм ΠΏΠΎ остаткам Ρ‚ΠΈΡ€ΠΎΠ·ΠΈΠ½Π° ΠΈ Ρ‡ΡƒΠ²ΡΡ‚Π²ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΡŒΡŽ ΠΊΠΎΡ€Ρ‚ΠΈΠΊΠ°Π»ΡŒΠ½Ρ‹Ρ… ΠΌΠΈΠΊΡ€ΠΎΡ‚Ρ€ΡƒΠ±ΠΎΡ‡Π΅ΠΊ ΠΊ Π΄Π΅ΠΉΡΡ‚Π²ΠΈΡŽ Ρ…ΠΎΠ»ΠΎΠ΄Π°.Π€ΠΎΡΡ„ΠΎΡ€ΠΈΠ»ΡŽΠ²Π°Π½Π½Ρ Π·Π°Π»ΠΈΡˆΠΊΡ–Π² Ρ‚ΠΈΡ€ΠΎΠ·ΠΈΠ½Ρƒ Ρ” Π²Π°ΠΆΠ»ΠΈΠ²ΠΈΠΌ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚ΠΎΠΌ ΡΠΈΠ³Π½Π°Π»ΡŒΠ½ΠΈΡ… каскадів Π² Π΅ΡƒΠΊΠ°Ρ€Ρ–ΠΎΡ‚ΠΈΡ‡Π½ΠΈΡ… ΠΊΠ»Ρ–Ρ‚ΠΈΠ½Π°Ρ…, ΠΏΡ€ΠΎΡ‚Π΅ ΠΉΠΎΠ³ΠΎ Ρ€ΠΎΠ»ΡŒ Ρ– Π²Π°ΠΆΠ»ΠΈΠ²Ρ–ΡΡ‚ΡŒ Π² рослинах Π΄ΠΎΡ‚Π΅ΠΏΠ΅Ρ€ Π·Π°Π»ΠΈΡˆΠ°Ρ”Ρ‚ΡŒΡΡ ΠΏΡ€Π°ΠΊΡ‚ΠΈΡ‡Π½ΠΎ Π½Π΅Π²Ρ–Π΄ΠΎΠΌΠΎΡŽ. Π©ΠΎΠ± виявити Ρ„ΡƒΠ½ΠΊΡ†Ρ–ΠΎΠ½Π°Π»ΡŒΠ½Ρƒ Ρ€ΠΎΠ»ΡŒ Ρ‚ΠΈΡ€ΠΎΠ·ΠΈΠ½Ρ„ΠΎΡΡ„ΠΎΡ€ΠΈΠ»ΡŽΠ²Π°Π½Π½Ρ Ρ‚ΡƒΠ±ΡƒΠ»Ρ–Π½Ρƒ Π² рослинній ΠΊΠ»Ρ–Ρ‚ΠΈΠ½Ρ–, дослідТСно взаємозв’язок ΠΌΡ–ΠΆ Π²ΠΏΠ»ΠΈΠ²ΠΎΠΌ Ρ–Π½Π³Ρ–Π±Ρ–Ρ‚ΠΎΡ€Ρ–Π² Ρ‚ΠΈΡ€ΠΎΠ·ΠΈΠ½ΠΊΡ–Π½Π°Π· (Π³Π΅Ρ€Π±Ρ–ΠΌΡ–Ρ†ΠΈΠ½Ρƒ А) Ρ– тирозинфосфатаз (ΠΎΡ€Ρ‚ΠΎΠ²Π°Π½Π°Π΄Π°Ρ‚Ρƒ Π½Π°Ρ‚Ρ€Ρ–ΡŽ) Ρ‚Π° Ρ‡ΡƒΡ‚Π»ΠΈΠ²Ρ–ΡΡ‚ΡŽ ΠΌΡ–ΠΊΡ€ΠΎΡ‚Ρ€ΡƒΠ±ΠΎΡ‡ΠΎΠΊ Π² ΠΊΠ»Ρ–Ρ‚ΠΈΠ½Π°Ρ… корСня A. thaliana Π΄ΠΎ Π΄Ρ–Ρ— Ρ…ΠΎΠ»ΠΎΠ΄Ρƒ. ΠžΡΠΊΡ–Π»ΡŒΠΊΠΈ Π±ΡƒΠ»ΠΎ встановлСно, Ρ‰ΠΎ інгібування Ρ‚ΠΈΡ€ΠΎΠ·ΠΈΠ½ΠΊΡ–Π½Π°Π· Π·Π½Π°Ρ‡Π½ΠΎ Π·Π±Ρ–Π»ΡŒΡˆΡƒΡ” Ρ‡ΡƒΡ‚Π»ΠΈΠ²Ρ–ΡΡ‚ΡŒ ΠΌΡ–ΠΊΡ€ΠΎΡ‚Ρ€ΡƒΠ±ΠΎΡ‡ΠΎΠΊ Π΄ΠΎ Ρ…ΠΎΠ»ΠΎΠ΄Ρƒ, Ρ‚ΠΎΠ΄Ρ– як інгібування тирозинфосфатаз ΠΏΡ–Π΄Π²ΠΈΡ‰ΡƒΡ” Ρ—Ρ…Π½ΡŽ Ρ…ΠΎΠ»ΠΎΠ΄ΠΎΡΡ‚Ρ–ΠΉΠΊΡ–ΡΡ‚ΡŒ, ΠΌΠΈ припускаємо існування ΠΏΠ΅Π²Π½ΠΎΠ³ΠΎ Ρ„ΡƒΠ½ΠΊΡ†Ρ–ΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ взаємозв’язку ΠΌΡ–ΠΆ Ρ„ΠΎΡΡ„ΠΎΡ€ΠΈΠ»ΡŽΠ²Π°Π½Π½ΡΠΌ ΠΏΠΎ Π·Π°Π»ΠΈΡˆΠΊΠ°Ρ… Ρ‚ΠΈΡ€ΠΎΠ·ΠΈΠ½Ρƒ Ρ‚Π° Ρ‡ΡƒΡ‚Π»ΠΈΠ²Ρ–ΡΡ‚ΡŽ ΠΊΠΎΡ€Ρ‚ΠΈΠΊΠ°Π»ΡŒΠ½ΠΈΡ… ΠΌΡ–ΠΊΡ€ΠΎΡ‚Ρ€ΡƒΠ±ΠΎΡ‡ΠΎΠΊ Π΄ΠΎ Π½ΠΈΠ·ΡŒΠΊΠΈΡ… Ρ‚Π΅ΠΌΠΏΠ΅Ρ€Π°Ρ‚ΡƒΡ€

    Genomics of tolerance to abiotic stress in the Triticeae

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    Genomics platforms offer unprecedented opportunities to identify, select and in some cases clone the genes and the quantitative trait loci (QTLs) that govern the tolerance of Triticeae to abiotic stresses and, consequently, grain yield. Transcriptome profiling and the other \u201comics\u201d platforms provide further information to unravel gene functions and validate the role of candidate genes. This review provides a synopsis of the main results on the studies that have investigated the genomics of Triticeae crops under conditions of abiotic constraints. With their rich biodiversity and high functional plasticity in response to environmental stresses, Triticeae crops provide an ideal ground for taking full advantage of the opportunities offered by genomics approaches. Ultimately, the practical impact of the knowledge and materials generated through genomics-based approaches will depend on their integration and exploitation within the extant breeding programs

    Genomics of Tolerance to Abiotic Stress in the Triticeae

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