scholarly journals Auxin-Induced Adventitious Root Formation in Nodal Cuttings of Camellia sinensis

2019 ◽  
Vol 20 (19) ◽  
pp. 4817 ◽  
Author(s):  
Kang Wei ◽  
Li Ruan ◽  
Liyuan Wang ◽  
Hao Cheng
Keyword(s):  
Camellia Sinensis ◽  
Adventitious Root ◽  
Time Course ◽  
Underlying Mechanism ◽  
Adventitious Root Formation ◽  
Auxin Signaling ◽  
Recent Developments ◽  
Nodal Cuttings ◽  
Tea Plants ◽  
Key Aspects

Adventitious root (AR) formation is essential for the successful propagation of Camellia sinensis and auxins play promotive effects on this process. Nowadays, the mechanism of auxin-induced AR formation in tea cuttings is widely studied. However, a lack of global view of the underlying mechanism has largely inhibited further studies. In this paper, recent advances including endogenous hormone changes, nitric oxide (NO) and hydrogen peroxide (H2O2) signals, secondary metabolism, cell wall reconstruction, and mechanisms involved in auxin signaling are reviewed. A further time course analysis of transcriptome changes in tea cuttings during AR formation is also suggested to deepen our understanding. The purpose of this paper is to offer an overview on the most recent developments especially on those key aspects affected by auxins and that play important roles in AR formation in tea plants.

scholarly journals Transcriptome Analysis of Indole-3-Butyric Acid-Induced Adventitious Root Formation in Nodal Cuttings of Camellia sinensis (L.)

PLoS ONE ◽  
2014 ◽  
Vol 9 (9) ◽  
pp. e107201 ◽  
Author(s):  
Kang Wei ◽  
Li-Yuan Wang ◽  
Li-Yun Wu ◽  
Cheng-Cai Zhang ◽  
Hai-Lin Li ◽  
...  
Keyword(s):  
Butyric Acid ◽  
Camellia Sinensis ◽  
Transcriptome Analysis ◽  
Adventitious Root ◽  
Root Formation ◽  
Adventitious Root Formation ◽  
Nodal Cuttings

scholarly journals The microRNA476a/RFL module regulates adventitious root formation through a mitochondria-dependent pathway in Populus

2019 ◽  
Author(s):  
Changzheng Xu ◽  
Yuanxun Tao ◽  
Xiaokang Fu ◽  
Li Guo ◽  
Haitao Xing ◽  
...  
Keyword(s):  
Adventitious Root ◽  
Developmental Plasticity ◽  
Adventitious Rooting ◽  
Adventitious Root Formation ◽  
Auxin Signaling ◽  
Stem Cuttings ◽  
Pentatricopeptide Repeat ◽  
Dynamic Regulation ◽  
Mitochondrial Regulation ◽  
Mitochondrial Homeostasis

AbstractAdventitious root (AR) formation at the base of stem cuttings determines the efficiency of clonal propagation for woody plants. Many endogenous and environmental factors influence AR formation. However, our knowledge about the regulation of AR development by mitochondrial metabolism in plants is very limited. Here we identified Populus-specific miR476a as a novel regulator of wound-induced adventitious rooting via orchestrating mitochondrial homeostasis in poplar. MiR476a exhibited inducible expression during AR formation and directly targets several Restorer of Fertility like (RFL) genes encoding mitochondrion-localized pentatricopeptide repeat proteins. Genetic modification of miR476-RFL expression revealed the miR476/RFL-mediated dynamic regulation of mitochondrial homeostasis on AR formation in transgenic poplar. Furthermore, mitochondrial perturbation via exogenous chemical inhibitor validated that the miR476a/RFL-directed AR formation depended on mitochondrial regulation though modulating the auxin pathway. Our results established a miRNA-directed mitochondrion-auxin signaling cascade required for AR development, providing novel insights into the understanding of mitochondrial regulation on plant developmental plasticity.

scholarly journals In Vitro and ex Vitro Adventitious Root Formation in Asian Jasmine (Trachelospermum asiaticum) I. Comparative Morphology

1993 ◽  
Vol 118 (6) ◽  
pp. 902-905 ◽  
Author(s):  
R.C. Apter ◽  
E.L. McWilliams ◽  
F.T. Davies
Keyword(s):  
Root Hair ◽  
Adventitious Root ◽  
Time Course ◽  
Root Hairs ◽  
Comparative Morphology ◽  
Adventitious Root Formation ◽  
Apparent Difference ◽  
Stem Cuttings ◽  
Root Primordia

One-node explants and one-node stem cuttings of Asian jasmine [Trachelospermum asiaticum (Siebold & Zucc.) Nakai] were rooted, respectively, in vitro [tissue culture (TC)] or by conventional macropropagation (MACRO). The TC and MACRO stem bases were then analyzed for differences in the time-course sequence of 1) root primordia initiation and development and 2) adventitious root xylem development and root-to-shoot xylem connections. Early root primordia were observed at Day 3, and, by Day 7, root-to-shoot xylem connections were equally developed in TC and MACRO systems. Continued development and emergence of adventitious roots were observed at Days 8 to 10. At Days 13 and 18, when viewed using scanning electron microscopy, TC root hairs were morphologically thicker and one-third to one-half the length of MACRO root hairs. There was no apparent difference in root-hair density. Inferior TC root-hair length may be a factor in the acclimation of TC-generated plantlets.

scholarly journals Cardiac Organoids to Model and Heal Heart Failure and Cardiomyopathies

Biomedicines ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 563
Author(s):  
Magali Seguret ◽  
Eva Vermersch ◽  
Charlène Jouve ◽  
Jean-Sébastien Hulot
Keyword(s):  
Tissue Engineering ◽  
Drug Testing ◽  
Cardiac Tissue ◽  
Cardiac Tissue Engineering ◽  
Cardiac Cells ◽  
Cardiac Functions ◽  
Different Types ◽  
Recent Developments ◽  
Human Cardiac Tissue ◽  
Key Aspects

Cardiac tissue engineering aims at creating contractile structures that can optimally reproduce the features of human cardiac tissue. These constructs are becoming valuable tools to model some of the cardiac functions, to set preclinical platforms for drug testing, or to alternatively be used as therapies for cardiac repair approaches. Most of the recent developments in cardiac tissue engineering have been made possible by important advances regarding the efficient generation of cardiac cells from pluripotent stem cells and the use of novel biomaterials and microfabrication methods. Different combinations of cells, biomaterials, scaffolds, and geometries are however possible, which results in different types of structures with gradual complexities and abilities to mimic the native cardiac tissue. Here, we intend to cover key aspects of tissue engineering applied to cardiology and the consequent development of cardiac organoids. This review presents various facets of the construction of human cardiac 3D constructs, from the choice of the components to their patterning, the final geometry of generated tissues, and the subsequent readouts and applications to model and treat cardiac diseases.

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