RESUMEN
The complete mol-ecule of the title compound, C(19)H(18)Cl(2)O(4), is generated by a crystallographic twofold axis that passes through the spiro C atom. The 1,3-dioxane ring adopts a chair conformation and the phenyl substituent occupies an equatorial site.
RESUMEN
The C=N-N=C linkage [torsion angle -172.5â (2)°] in the title azine, C(20)H(28)N(2), adopts a trans conformation. The six-membered rings adopt sofa conformations.
RESUMEN
In the title compound, C(25)H(26)O(2), the dioxane ring adopts a chair conformation with the two substituent groups occupying equatorial positions.
RESUMEN
Root gravitropism is one of the important factors to determine root architecture. To understand the mechanism underlying root gravitropism, we isolated a rice (Xiushui63) mutant defective in root gravitropism, designated as gls1. Vertical sections of root caps revealed that gls1 mutant displayed normal distribution of amyloplast in the columella cells compared with the wild type. The gls1 mutant was less sensitive to 2,4-dichlorophenoxyacetic acid (2,4-D) and alpha-naphthaleneacetic acid (NAA) than the wild type. Genetic analysis indicated that the phenotype of gls1 mutant was caused by a single recessive mutation, which is mapped in a 255-kb region between RM16253 and CAPS1 on the short arm of chromosome 4.
Asunto(s)
Genes de Plantas , Gravitropismo/genética , Oryza/crecimiento & desarrollo , Oryza/genética , Ácido 2,4-Diclorofenoxiacético/farmacología , Secuencia de Bases , Mapeo Cromosómico , Cromosomas de las Plantas/genética , ADN de Plantas/genética , Resistencia a Medicamentos/genética , Genes Recesivos , Gravitropismo/fisiología , Ácidos Indolacéticos/farmacología , Mutación , Ácidos Naftalenoacéticos/farmacología , Oryza/efectos de los fármacos , Oryza/fisiología , Fenotipo , Reguladores del Crecimiento de las Plantas/farmacología , Raíces de Plantas/crecimiento & desarrollo , Raíces de Plantas/fisiologíaRESUMEN
The four six-membered rings all adopt chair conformations in the two independent mol-ecules of the title cyclo-hexa-none cyclic diacetal with penta-erythritol, C(17)H(28)O(4).
