scholarly journals Studies on Root Formation in Certain Cultivated Plants : III. Relation between primary root formation and canal development in crown roots of rice plants

1956 ◽  
Vol 24 (3) ◽  
pp. 232-236 ◽  
Author(s):  
Sin'ichiro KAWATA
Keyword(s):  
Root Formation ◽  
Primary Root ◽  
Cultivated Plants ◽  
Rice Plants ◽  
Crown Roots

scholarly journals On the Lateral Root Formation in Relation to the Diameter of Crown Roots in Rice Plants

1980 ◽  
Vol 49 (1) ◽  
pp. 103-111 ◽  
Author(s):  
Shin-ichiro KAWATA ◽  
Osamu SASAKI ◽  
koou YAMAZAKI
Keyword(s):  
Lateral Root ◽  
Root Formation ◽  
Lateral Root Formation ◽  
Rice Plants ◽  
Crown Roots

scholarly journals Peculiarities of in vitro rooting of some species of Carlina L. genus

1970 ◽  
pp. 215-220
Author(s):  
N. B. Kravets ◽  
M. Z. Mosula ◽  
N. M. Drobyk ◽  
N. V. Tulaidan ◽  
M. B. Cheterbok
Keyword(s):  
Acid Solution ◽  
Growth Regulators ◽  
Root Formation ◽  
Cultivated Plants ◽  
Treat Ment ◽  
Presowing Treatment ◽  
Murashige Skoog ◽  
Half Strength ◽  
Semi Solid

Aim. The aim of the study was to choose conditions for rooting improvement of in vitro cultivated plants of some species of Carlina L. genus. Methods. For receiving and rooting of aseptic sprouts, seeds of Carlina acaulis L., Carlina cirsioides Klok and Carlina onopordifolia Besser ex Szafer, Kulcz. et Pawl were subjected to presowing treatment with gibberellic acid solution (GA3) or indolebyturic acid solution (IBA). Sterilized seeds were planted in sterile Petri dishes on semi-solid Murashige, Skoog nutrient medium with half-strength concentrations of macro- and microsalts without growth regulators. Results. It was found that with the seed soaking of C. acaulis, C. cirsioides and C. onopordifolia in GA3 solution the percentage of root formation amounted to 33.3 %, 33.3 % and 22.2 % respectively. Presowing treat-ment of carlina seeds in IBA solution with concentration of 1000 mg for 2–4 hours before sterilization gave a positive effect: the percentage of root formation for C. acaulis, C. cirsioides and C. onorordifolia was 2.4–4.5 times higher compared to the treatment with GA3 solution. Conclusions. To form the root system of carlina plants it is effective to soak the seeds in the solution of IBA. Thus we were able to increase the percentage of rooting of C. sirsioides and C. onorordifolia plants to 100 %, C. acaulis plants – up to 80 % and avoid sprouts’ injury and changes in the concentra-tions of the IBA, which may occur during sterilization at high temperatures by using non-sterile solution of growth regulators. Keywords: Carlina àcaulis L., Carlina cirsioides Klok, Carlina onopordifolia Besser ex Szafer, Kulcz. et Pawl, in vitro, sprouts rooting.

scholarly journals Formation of Root Hair in Crown Roots of Rice Plants and Nitrogen Fertilizer

1977 ◽  
Vol 46 (2) ◽  
pp. 199-204 ◽  
Author(s):  
Shin-ichiro KAWATA ◽  
Wonil CHUNG
Keyword(s):  
Nitrogen Fertilizer ◽  
Root Hair ◽  
Rice Plants ◽  
Crown Roots

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 The Detachment of the "Primary Root Caps" in Rice Plants

1979 ◽  
Vol 48 (2) ◽  
pp. 303-310 ◽  
Author(s):  
Shin-ichiro KAWATA ◽  
Shigeru SUZUKI ◽  
koou YAMAZAKI
Keyword(s):  
Primary Root ◽  
Rice Plants

The auxin-insensitive bodenlos mutation affects primary root formation and apical-basal patterning in the Arabidopsis embryo

Development ◽  
1999 ◽  
Vol 126 (7) ◽  
pp. 1387-1395 ◽  
Author(s):  
T. Hamann ◽  
U. Mayer ◽  
G. Jurgens
Keyword(s):  
Daughter Cell ◽  
Root Formation ◽  
Normal Development ◽  
Root Meristem ◽  
Primary Root ◽  
Cell Stage ◽  
New Gene ◽  
Auxin Resistant1 ◽  
Auxin Analogue ◽  
Adult Plants

In Arabidopsis embryogenesis, the primary root meristem originates from descendants of both the apical and the basal daughter cell of the zygote. We have isolated a mutant of a new gene named BODENLOS (BDL) in which the primary root meristem is not formed whereas post-embryonic roots develop and bdl seedlings give rise to fertile adult plants. Some bdl seedlings lacked not only the root but also the hypocotyl, thus resembling monopteros (mp) seedlings. In addition, bdl seedlings were insensitive to the auxin analogue 2,4-D, as determined by comparison with auxin resistant1 (axr1) seedlings. bdl embryos deviated from normal development as early as the two-cell stage at which the apical daughter cell of the zygote had divided horizontally instead of vertically. Subsequently, the uppermost derivative of the basal daughter cell, which is normally destined to become the hypophysis, divided abnormally and failed to generate the quiescent centre of the root meristem and the central root cap. We also analysed double mutants. bdl mp embryos closely resembled the two single mutants, bdl and mp, at early stages, while bdl mp seedlings essentially consisted of hypocotyl but did form primary leaves. bdl axr1 embryos approached the mp phenotype at later stages, and bdl axr1 seedlings resembled mp seedlings. Our results suggest that BDL is involved in auxin-mediated processes of apical-basal patterning in the Arabidopsis embryo.

scholarly journals On the Lateral Root Primordia Formation in the Crown Roots of Rice Plants

1965 ◽  
Vol 33 (4) ◽  
pp. 423-431 ◽  
Author(s):  
Shin-ichiro KAWATA ◽  
Hidejiro SHIBAYAMA
Keyword(s):  
Lateral Root ◽  
Root Primordia ◽  
Lateral Root Primordia ◽  
Rice Plants ◽  
Crown Roots

scholarly journals Knock-Down of Arabidopsis PLC5 Reduces Primary Root Growth and Secondary Root Formation While Overexpression Improves Drought Tolerance and Causes Stunted Root Hair Growth

2018 ◽  
Vol 59 (10) ◽  
pp. 2004-2019 ◽  
Author(s):  
Qianqian Zhang ◽  
Ringo van Wijk ◽  
Xavier Zarza ◽  
Muhammad Shahbaz ◽  
Max van Hooren ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Root Growth ◽  
Root Hair ◽  
Hair Growth ◽  
Root Formation ◽  
Primary Root ◽  
Secondary Root ◽  
Knock Down ◽  
Root Hair Growth ◽  
Primary Root Growth
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