scholarly journals Morphological and Anatomical Analysis on the Formation of Crown Root Primordia of Rice Plant

2000 ◽  
Vol 69 (Supplement1) ◽  
pp. 254-257
Author(s):  
Youji Nitta
Keyword(s):  
Rice Plant ◽  
Root Primordia ◽  
Crown Root ◽  
Anatomical Analysis

Cadmium decreases crown root number by decreasing endogenous nitric oxide, which is indispensable for crown root primordia initiation in rice seedlings

Planta ◽  
2009 ◽  
Vol 230 (4) ◽  
pp. 599-610 ◽  
Author(s):  
Jie Xiong ◽  
Han Lu ◽  
Kaixing Lu ◽  
Yuxing Duan ◽  
Lingyao An ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Root Number ◽  
Rice Seedlings ◽  
Root Primordia ◽  
Crown Root ◽  
Endogenous Nitric Oxide

scholarly journals Transcriptome profiling of laser-captured crown root primordia reveals new pathways activated during early stages of crown root formation in rice

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0238736
Author(s):  
Jérémy Lavarenne ◽  
Mathieu Gonin ◽  
Antony Champion ◽  
Marie Javelle ◽  
Hélène Adam ◽  
...  
Keyword(s):  
Root Formation ◽  
Developmental Stages ◽  
Transcriptome Profiling ◽  
Rice Root ◽  
Primary Data ◽  
Root Initiation ◽  
Root Primordia ◽  
Data Resource ◽  
Crown Root ◽  
Crown Roots

Crown roots constitute the main part of the rice root system. Several key genes involved in crown root initiation and development have been identified by functional genomics approaches. Nevertheless, these approaches are impaired by functional redundancy and mutant lethality. To overcome these limitations, organ targeted transcriptome analysis can help to identify genes involved in crown root formation and early development. In this study, we generated an atlas of genes expressed in developing crown root primordia in comparison with adjacent stem cortical tissue at three different developmental stages before emergence, using laser capture microdissection. We identified 3975 genes differentially expressed in crown root primordia. About 30% of them were expressed at the three developmental stages, whereas 10.5%, 19.5% and 12.8% were specifically expressed at the early, intermediate and late stages, respectively. Sorting them by functional ontology highlighted an active transcriptional switch during the process of crown root primordia formation. Cross-analysis with other rice root development-related datasets revealed genes encoding transcription factors, chromatin remodeling factors, peptide growth factors, and cell wall remodeling enzymes that are likely to play a key role during crown root primordia formation. This atlas constitutes an open primary data resource for further studies on the regulation of crown root initiation and development.

scholarly journals On the Number and the Diameter of Crown Root Primordia in Rice Plants

1978 ◽  
Vol 47 (4) ◽  
pp. 644-654 ◽  
Author(s):  
Shin-ichiro KAWATA ◽  
Jiro HARADA ◽  
Koou YAMAZAKI
Keyword(s):  
Root Primordia ◽  
Rice Plants ◽  
Crown Root

scholarly journals Response of Fuchsia hybrida cuttings to flurprimidol and naphthaleneacetic acid application

2013 ◽  
Vol 66 (1) ◽  
pp. 9-16 ◽  
Author(s):  
Katarzyna Wróblewska
Keyword(s):  
Shoot Length ◽  
Axillary Shoot ◽  
Naphthaleneacetic Acid ◽  
Growth Retardants ◽  
Subsequent Growth ◽  
Root Primordia ◽  
Axillary Shoots ◽  
Anatomical Analysis ◽  
Commercial Plant ◽  
Plant Growth Retardants

Auxins are the only compounds used in commercial plant propagation to stimulate rooting, although efforts have been made to find other efficient compounds. Another group of rooting promoters could be plant growth retardants (PGRs) which act as inhibitors of gibberellin synthesis. The aim of the experiment was to determine the effect of flurprimidol and naphthalene-1-acetic acid (NAA) applied by quick-dip method on rooting and development of <em>Fuchsia hybrida</em> 'Swingtime' cuttings and their subsequent growth. Anatomical analysis of the rooting process was also done. Flurprimidol and NAA did not influence the percentage of rooted fuchsia cuttings but increased the number of adventitious roots. Both compounds were involved in earlier formation of root primordia. Flurprimidol and NAA, used simultaneously or separately, increased the number and length of axillary shoots of fuchsia cuttings. The effect of flurprimidol on the number of roots and shoots was stronger than that of NAA, but diminished after transplanting the rooted cuttings. The influence of flurprimidol on axillary shoot length was weaker as its concentration increased.

scholarly journals Does nitric oxide play a pivotal role downstream of auxin in promoting crown root primordia initiation in monocots?

2009 ◽  
Vol 4 (10) ◽  
pp. 999-1001 ◽  
Author(s):  
Jie Xiong ◽  
Longxing Tao ◽  
Cheng Zhu
Keyword(s):  
Nitric Oxide ◽  
Pivotal Role ◽  
Root Primordia ◽  
Crown Root

scholarly journals The influence of adenine and benzyladenine on rooting and development of Fuchsia hybrida cuttings

2012 ◽  
Vol 65 (4) ◽  
pp. 101-108 ◽  
Author(s):  
Katarzyna Wróblewska
Keyword(s):  
Inhibitory Effect ◽  
Shoot Development ◽  
Direct Application ◽  
Axillary Shoot ◽  
Naphthaleneacetic Acid ◽  
Root Number ◽  
Root Primordia ◽  
Common Component ◽  
Bud Formation ◽  
Anatomical Analysis

Cytokinins are a group of plant hormones stimulating, among others, axillary bud formation and inhibiting rhizogenesis. Adenine, their common component, often expresses cytokinin-like activity in plant development. The aim of the experiment was to determine the effect of adenine on rooting and development of <em>Fuchsia hybrida </em>cuttings. The influence of adenine was also assessed in comparison to benzyladenine, including their cooperation with 1-naphthaleneacetic acid. Anatomical analysis of the rooting process was also undertaken. Application of BA, both alone or together with NAA, strongly inhibited rhizogenesis, but stimulated axillary shoot outgrowth. Adenine exhibited cytokinin-like activity on axillary shoot development in <em>Fuchsia hybrida </em>cuttings, but did not show the inhibitory effect on root development typical for cytokinins. This compound, particularly at higher concentrations, stimulated both axillary shoot development and rooting, which was expressed as an increase in root number and rooting percentage, even after direct application to the base of the cuttings. Anatomical analysis revealed adenine-derived acceleration during elongation of adventitious root primordia.

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