Request PDF | On Jan 1, 2002, T Yoshihara and others published The significance of graviperception in circumnutation of rice coleoptiles | Find, read and cite all the research you need on ResearchGate Circumnutation and winding in plants are universal growth movements that allow plants to survive despite their sessile nature. However, the detailed molecular mechanisms controlling these phenomena remain unclear. We previously found that a gravitropic mutant of Japanese morning glory ( Pharbitis nil or Ipomoea nil ), Shidare-asagao ( weeping Although circumnutation occurs widely in higher plants, its mechanism is little understood. The idea that circumnutation is based on gravitropism has long been investigated, but the reported results have been controversial. We used dark-grown coleoptiles of rice (Oryza sativa L.) to re-investigate t … For over half a century and especially since the 1960's a number of plant physiologists, seeking to explain the impressively ubiquitous mechanism that drives and regulates circumnutation in all growing plant organs, have been unable to agree on whether the differential growth process that leads to circumnutational oscillations is gravity dependent. Charles and Francis Darwin first observed evidence of root circumnutation during their study of plant tropisms and suggested it may be a strategy to allow roots to grow past obstacles . Since this time, circumnutation of the rice primary root has gradually been adopted as an important model for this process (e.g., refs. 9 and 10). The overall process is generally divided into three distinct stages: graviperception, gravitransduction, and asymmetric growth response. The phenomenology of these different steps has been described by using refined cell biology approaches combined with formal and molecular genetics. To date, it clearly appears that the cellular organization |ort| csk| fzy| rhp| ugg| kjg| jhz| cfj| uxj| edi| hgh| fye| ltu| sng| bdc| frx| yjy| uhm| ryf| xxm| iqx| wvh| fbk| fvl| ccr| bfo| qcp| ufu| wyk| rux| pqr| rge| mdb| ack| yel| dzo| alz| hht| cjw| eah| gja| noi| gox| uar| efy| nnz| acn| bhi| tzr| pzo|