Exogenous nitrate induces root branching and inhibits primary root growth in Capsicum chinense Jacq.

Celis-Arámburo, Teresita de Jesús; Carrillo-Pech, Mildred; Castro-Concha, Lizbeth A.; Miranda-Ham, María de Lourdes; Martínez‐Estévez, Manuel; Echevarría‐Machado, Ileana

doi:10.1016/j.plaphy.2011.09.003

Cited by 20 publications

(12 citation statements)

References 37 publications

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“…Capsicum chinense 'Orange' was sourced from Seminis Vegetable Seeds (Seminis Vegetable Seeds, St. Louis, MO). Seeds were surfacesterilized (Celis-Arámburo et al, 2011) and germinated by placing them in 9-cm petri dishes containing a thin layer of cotton covered with filter paper moistened with sterile distilled water. The dishes were placed in the dark at 25 ± 2°C.…”

Section: Methodsmentioning

confidence: 99%

A Novel Effect for Glycine on Root System Growth of Habanero Pepper

Domínguez-May¹,

Carrillo-Pech²,

Barredo-Pool³

et al. 2013

J. Amer. Soc. Hort. Sci.

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Amino acids, a major fraction of the low-molecular-weight organic nitrogen in soil, act as signaling molecules that indicate the presence of nutrient-rich patches to the roots. To characterize the effects of amino acids on root growth, we used seedlings of habanero pepper (Capsicum chinense), one of the most widely cultivated annual spice crops in the world. We tested the effect of L-glutamate, L-aspartate, and glycine on the primary root of seedlings grown aseptically under different conditions of pH and light. L-glutamate and L-aspartate did not inhibit the root growth of habanero pepper. In contrast, glycine inhibited the growth of roots, stimulated root hair growth, and induced a significant accumulation of starch grains in the root apex. The use of aminoethoxyvinylglycine, an inhibitor of ethylene biosynthesis, and the evaluation of 1-aminocyclopropane-1-carboxylic acid oxidase expression provided evidence of a role for ethylene in the root responses to glycine. We suggest that these changes in the root apex in response to exogenous glycine could be an important adaptive response that allows plants to efficiently access the fluctuating availability of nutrients in the soil.

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Section: Methodsmentioning

confidence: 99%

A Novel Effect for Glycine on Root System Growth of Habanero Pepper

Domínguez-May¹,

Carrillo-Pech²,

Barredo-Pool³

et al. 2013

J. Amer. Soc. Hort. Sci.

Self Cite

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“…Walch‐Liu & Forde () demonstrated that NO 3 − is able to stimulate primary root growth in a number of Arabidopsis accessions. In contrast, inhibition of primary root growth by NO 3 − has been demonstrated in maize (Zhao et al ., ; Tian et al ., ) and NO 3 − inhibited the growth of the primary root of C. chinense between the fourth and fifth day of treatment, an effect that could be reversed by auxin (Celis‐Arámburo et al ., ).…”

Section: Root Architecturementioning

confidence: 97%

“…Celis‐Arámburo et al . () showed with Capsicum chinense that NO 3 − , when applied locally as a patch, stimulated an increase in both the number and length of the lateral roots. Auxin could substitute for NO 3 − in this stimulation, although differences were noted between accessions.…”

Section: Root Architecturementioning

confidence: 98%

Do plants need nitrate? The mechanisms by which nitrogen form affects plants

Andrews

Raven

Lea

2013

Annals of Applied Biology

280

169

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The literature on nitrogen (N) form effects on plants at different stages of their development has been critically reviewed, assessing the possible mechanisms of these effects. In particular, nitrate (NO 3 − ) was compared with the other forms of N utilised by plants. It is concluded that the form of N available to plants can affect their time and rate of seed germination, leaf expansion and function, dry matter partitioning between shoot and root, and root architecture. The magnitude of these effects is dependent on environmental factors outside the supply of N. The mechanism of these effects is variable. Assessment of the importance of root or shoot NO 3 − assimilation under different environmental conditions is an important area for further study.

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“…Nitrate is one of the major nutrients known to act as a signal molecule in the regulation of root architecture through the regulation of primary root growth and by influencing the emergence and development of lateral roots (LR) Forde 1998, 2000;Zhang et al 1999;Tian et al 2008;Vidal et al 2010;Celis-Arámburo et al 2011). This effect is complicated due to the changes in root architecture caused by changes in root environment and their influence on plant physiology.…”

Section: Primary Nitrate Responsementioning

confidence: 99%

Nitrate transporters: an overview in legumes

Pellizzaro

Alibert

Planchet

et al. 2017

Planta

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Main conclusion The nitrate transporters, belonging to NPF and NRT2 families, play critical roles in nitrate signaling, root growth and nodule development in legumes.Nitrate plays an essential role during plant development as nutrient and also as signal molecule, in both cases working via the activity of nitrate transporters. To date, few studies on NRT2 or NPF nitrate transporters in legumes have been reported, and most of those concern Lotus japonicus and Medicago truncatula. A molecular characterization led to the identification of 4 putative LjNRT2 and 37 putative LjNPF gene sequences in L. japonicus. In M. truncatula, the NRT2 family is composed of 3 putative members. Using the new genome annotation of M. truncatula (Mt4.0), we identified, for this review, 97 putative MtNPF sequences, including 32 new sequences relative to previous studies. Functional characterization has been published for only two MtNPF genes, encoding nitrate transporters of M. truncatula. Both transporters have a role in root system development via abscisic acid signaling: MtNPF6.8 acts as a nitrate sensor during the cell elongation of the primary root, while MtNPF1.7 contributes to the cellular organization of the root tip and nodule formation. An in silico expression study of MtNPF genes confirmed that NPF genes are expressed in nodules, as previously shown for L. japonicus, suggesting a role for the corresponding proteins in nitrate transport, or signal perception in nodules. This review summarizes our knowledge of legume nitrate transporters and discusses new roles for these proteins based on recent discoveries.

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Exogenous nitrate induces root branching and inhibits primary root growth in Capsicum chinense Jacq.

Cited by 20 publications

References 37 publications

A Novel Effect for Glycine on Root System Growth of Habanero Pepper

A Novel Effect for Glycine on Root System Growth of Habanero Pepper

Do plants need nitrate? The mechanisms by which nitrogen form affects plants

Nitrate transporters: an overview in legumes

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