scholarly journals The Auxin-Regulated AP2/EREBP Gene PUCHI Is Required for Morphogenesis in the Early Lateral Root Primordium of Arabidopsis

2007 ◽  
Vol 19 (7) ◽  
pp. 2156-2168 ◽  
Author(s):  
Atsuko Hirota ◽  
Takehide Kato ◽  
Hidehiro Fukaki ◽  
Mitsuhiro Aida ◽  
Masao Tasaka
Keyword(s):  
Lateral Root ◽  
Lateral Root Primordium ◽  
Root Primordium

scholarly journals Control of Arabidopsis lateral root primordium boundaries by MYB36

2016 ◽  
Vol 213 (1) ◽  
pp. 105-112 ◽  
Author(s):  
María Fernández-Marcos ◽  
Bénédicte Desvoyes ◽  
Concepción Manzano ◽  
Louisa M. Liberman ◽  
Philip N. Benfey ◽  
...  
Keyword(s):  
Lateral Root ◽  
Lateral Root Primordium ◽  
Root Primordium

Lateral root initiation in Marsilea quadrifolia. I. Origin and histogenesis of lateral roots

1991 ◽  
Vol 69 (1) ◽  
pp. 123-135 ◽  
Author(s):  
Bai-Ling Lin ◽  
V. Raghavan
Keyword(s):  
Lateral Root ◽  
Single Cells ◽  
Lateral Roots ◽  
Central Axis ◽  
Root Initiation ◽  
Vascular Connection ◽  
Lateral Root Initiation ◽  
Marsilea Quadrifolia ◽  
Lateral Root Primordium ◽  
Root Primordium

In Marsilea quadrifolia, lateral roots arise from modified single cells of the endodermis located opposite the protoxylem poles within the meristematic region of the parent root. The initial cell divides in four specific planes to establish a fivecelled lateral root primordium, with a tetrahedral apical cell in the centre and the oldest merophytes and the root cap along the sides. The cells of the merophyte divide in a precise pattern to give rise to the cells of the cortex, endodermis, pericycle, and vascular tissues of the emerging lateral root. Although the construction of the parent root is more complicated than that of lateral roots, patterns of cell division and tissue formation are similar in both types of roots, with the various tissues being arranged in similar positions in relation to the central axis. Vascular connection between the lateral root primordium and the parent root is derived from the pericycle cells lying between the former and the protoxylem members of the latter. It is proposed that the central axis of the root is not only a geometric centre, but also a physiological centre which determines the fate of the different cell types. Key words: lateral root initiation, Marsilea quadrifolia, root histogenesis.

scholarly journals Editorial: Root Branching: From Lateral Root Primordium Initiation and Morphogenesis to Function

2019 ◽  
Vol 10 ◽  
Author(s):  
Joseph G. Dubrovsky ◽  
Hidehiro Fukaki ◽  
Laurent Laplaze ◽  
Marta Laskowski
Keyword(s):  
Lateral Root ◽  
Root Branching ◽  
Lateral Root Primordium ◽  
Root Primordium

scholarly journals Histological characterization of the lateral root primordium development in rice

2014 ◽  
Vol 55 (1) ◽  
Author(s):  
Jun Ni ◽  
Yan-Xia Shen ◽  
Yan-Yan Zhang ◽  
Yu Liu
Keyword(s):  
Lateral Root ◽  
Lateral Root Primordium ◽  
Root Primordium

scholarly journals Unique features of the grapevine VvK5.1 channel support novel functions for outward K+ channels in plants

2019 ◽  
Vol 70 (21) ◽  
pp. 6181-6193 ◽  
Author(s):  
Jérémy Villette ◽  
Teresa Cuéllar ◽  
Sabine D Zimmermann ◽  
Jean-Luc Verdeil ◽  
Isabelle Gaillard
Keyword(s):  
Lateral Root ◽  
K Channels ◽  
Lateral Root Primordium ◽  
Root Primordium ◽  
Channel Type

The unexpected location of VvK5.1 expression detected in the lateral root primordium, berry phloem and pistil provides new insights into the roles that this outward channel type can play in plants.

scholarly journals Auxin signaling modulates LATERAL ROOT PRIMORDIUM 1 ( LRP 1 ) expression during lateral root development in Arabidopsis

2019 ◽  
Vol 101 (1) ◽  
pp. 87-100 ◽  
Author(s):  
Sharmila Singh ◽  
Sandeep Yadav ◽  
Alka Singh ◽  
Mahima Mahima ◽  
Archita Singh ◽  
...  
Keyword(s):  
Root Development ◽  
Lateral Root ◽  
Auxin Signaling ◽  
Lateral Root Development ◽  
Lateral Root Primordium ◽  
Root Primordium

Prenodule formation and primary nodule development in roots of Comptonia (Myricaceae)

1977 ◽  
Vol 55 (17) ◽  
pp. 2306-2318 ◽  
Author(s):  
Dale Callaham ◽  
John G. Torrey
Keyword(s):  
Root Hair ◽  
Lateral Root ◽  
Lateral Roots ◽  
Cortical Cell ◽  
Host Cells ◽  
Nodule Development ◽  
Nodule Formation ◽  
Cortical Cells ◽  
Lateral Root Primordium ◽  
Root Primordium

Seedlings of the sweet fern, Comptonia peregrina (L.) Coult., grown aeroponically, were inoculated with a nodule suspension to allow infection by the actinomycete-like organism which causes nodule formation. Roots with early stages of infection and nodule initiation were fixed, embedded in resin, sectioned, and examined. Infection is infrequent in Comptonia with only a few nodules per seedling root system. Infection via root hair invasion causes the retention of the curled and deformed root hair in an intensely cytoplasmic state with ramification of multiple filamentous strands of the endophyte. A limited cortical proliferation occurs in response to the infection forming the prenodule; endophyte filaments grow radially inward from the base of the infected epidermal root hair and invade a portion of the prenodular cells resulting in their hypertrophy. Distal and proximal to the prenodule site, a number of primary nodule primordia are initiated, varying from a few up to a dozen or more. These primordia appear to develop more or less simultaneously under the stimulus of the invading endophyte; they are like lateral roots in their site of origin, occurring largely opposite the protoxylem poles and involving pericyclic and endodermal cell proliferation. They differ in that the cortical cells external to each primordium are stimulated to undergo divisions and these cortical cell derivatives are incorporated into the developing primordium. The endophyte enters the cortical tissues of the lateral root on which the prenodule has formed and then invades proximal and distal to the infection site, progressing into the cortical tissues of each of the developing nodule primordia. A cork-like layer develops on the original lateral root in areas not occupied by primordia by initiation of subepidermal cell divisions and wall thickening. Normal lateral root primordium formation occurs in the pericycle opposite the protoxylem poles and involves cellular derivatives of the pericycle and endodermis but no cortical cells, which instead are crushed and displaced by the lateral root primordium as it develops. Nodule formation clearly involves complex chemical interactions, which remain for further study, between the host cells and the invading endophyte.

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