نتایج جستجو برای: adventitious agents

تعداد نتایج: 362471  

2014
Arthur Q. Villordon Christopher A. Clark Boris Alexander Vinatzer

It has been shown that virus infections, often symptomless, significantly limit sweetpotato productivity, especially in regions characterized by low input agricultural systems. In sweetpotatoes, the successful emergence and development of lateral roots (LRs), the main determinant of root architecture, determines the competency of adventitious roots to undergo storage root initiation. This study...

2011
Jun-Ying Zhang Tae-Woong Bae Kyung-Hwan Boo Hyeon-Jin Sun In-Ja Song Chi-Hoa Pham Markkandan Ganesan Dae-Hwa Yang Hong-Gyu Kang Suk-Min Ko Key-Zung Riu Pyung-Ok Lim Hyo-Yeon Lee

With the purpose of improving ginsenoside content in adventitious root cultures of Korean wild ginseng (Panax ginseng Meyer), the roots were treated with different dosages of γ-ray (5, 10, 25, 50, 75, 100, and 200 Gy). The growth of adventitious roots was inhibited at over 100 Gy. The irradiated adventitious roots showed significant variation in the morphological parameters and crude saponin co...

2014
Inge Verstraeten Sébastien Schotte Danny Geelen

Wound-induced adventitious root (AR) formation is a requirement for plant survival upon root damage inflicted by pathogen attack, but also during the regeneration of plant stem cuttings for clonal propagation of elite plant varieties. Yet, adventitious rooting also takes place without wounding. This happens for example in etiolated Arabidopsis thaliana hypocotyls, in which AR initiate upon de-e...

2016
Manisha Negi Raghavendrarao Sanagala Vandna Rai Ajay Jain

Phosphate (Pi), an essential macronutrient for growth and development of plant, is often limiting in soils. Plants have evolved an array of adaptive strategies including modulation of root system architecture (RSA) for optimal acquisition of Pi. In rice, a major staple food, RSA is complex and comprises embryonically developed primary and seminal roots and post-embryonically developed adventiti...

2012
Benjamin Jones Payel Das Zaid Chalabi Michael Davies Ian Hamilton Robert Lowe James Milner Ian Ridley Clive Shrubsole Paul Wilkinson

The importance of adventitious air leakage under normal operational conditions and its reduction in order to save energy is highlighted by the relvant building standards of many countries. This operational leakage is often inferred via the measurement of air permeability, a physical property of a building that indicates the resistance of its fabric to airflow. A building’s permeability is the m...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2003
Tomoko Komiyama Bryan VanderLugt Martin Fugère Robert Day Randal J Kaufman Robert S Fuller

Polypeptide protease inhibitors are often found to inhibit targets with which they did not coevolve, as in the case of high-affinity inhibition of bacterial subtilisin by the leech inhibitor eglin c. Two kinds of contacts exist in such complexes: (i) reactive site loop-active site contacts and (ii) interactions outside of these that form the broader enzyme-inhibitor interface. We hypothesized t...

2002
Hongjun Chen Robert G. Qualls Glenn C. Miller

Lepidium latifolium, perennial pepperweed, is an exotic crucifer that has spread explosively in recent years in wetlands and riparian areas of the western United States. Adaptive responses of L. latifolium to different durations of 0, 3, 7, 15, 30 and 50-day soil flooding treatment were investigated. Biomass allocation, adventitious rooting, aerenchyma development and ethylene production in pla...

Journal: :Journal of experimental botany 2009
Ana Margarida Santos Melvin John Oliver Ana Maria Sánchez Paxton Robert Payton João Paulo Gomes Célia Miguel M Margarida Oliveira

Plant genetic transformation usually depends on efficient adventitious regeneration systems. In almond (Prunus dulcis Mill.), regeneration of transgenic adventitious shoots was achieved but with low efficiency. Histological studies identified two main stages of organogenesis in almond explants that were induced for adventitious shoot regeneration; a dedifferentiation stage (early) and a shoot i...

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