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Hemoglobin is essential for normal growth of Arabidopsis organs

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Hemoglobin is essential for normal growth of Arabidopsis organs. / Hebelstrup, Kim Henrik; Hunt, Peter; Dennis, Elizabeth; Jensen, Susie Bjerregaard; Jensen, Erik Østergaard.

In: Physiol. Plant., Vol. 127, No. 1, 2006, p. 157-166.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Hebelstrup, KH, Hunt, P, Dennis, E, Jensen, SB & Jensen, EØ 2006, 'Hemoglobin is essential for normal growth of Arabidopsis organs', Physiol. Plant., vol. 127, no. 1, pp. 157-166.

APA

Hebelstrup, K. H., Hunt, P., Dennis, E., Jensen, S. B., & Jensen, E. Ø. (2006). Hemoglobin is essential for normal growth of Arabidopsis organs. Physiol. Plant., 127(1), 157-166.

CBE

Hebelstrup KH, Hunt P, Dennis E, Jensen SB, Jensen EØ. 2006. Hemoglobin is essential for normal growth of Arabidopsis organs. Physiol. Plant. 127(1):157-166.

MLA

Vancouver

Hebelstrup KH, Hunt P, Dennis E, Jensen SB, Jensen EØ. Hemoglobin is essential for normal growth of Arabidopsis organs. Physiol. Plant. 2006;127(1):157-166.

Author

Hebelstrup, Kim Henrik ; Hunt, Peter ; Dennis, Elizabeth ; Jensen, Susie Bjerregaard ; Jensen, Erik Østergaard. / Hemoglobin is essential for normal growth of Arabidopsis organs. In: Physiol. Plant. 2006 ; Vol. 127, No. 1. pp. 157-166.

Bibtex

@article{d08fc880b4f611dbbee902004c4f4f50,
title = "Hemoglobin is essential for normal growth of Arabidopsis organs",
abstract = "In Arabidopsis thaliana, the class I hemoglobin AHb1 is transiently expressed in the hydathodes of leaves and in floral buds from young inflorescences. Nitric oxide (NO) accumulates to high levels in these organs when AHb1 is silenced, indicating an important role in metabolizing NO. AHb1-silenced lines are viable but show a mutant phenotype affecting the regions where AHb1 is expressed. Arabidopsis lines with an insertional knockout or overexpression of AHb2, a class II 3-on-3 hemoglobin, were generated. Seedlings overexpressing AHb2 show enhanced survival of hypoxic stress. The AHb2 knockout lines develop normally. However, when AHb2 knockout is combined with AHb1 silencing, seedlings die at an early vegetative stage suggesting that the two 3-on-3 hemoglobins, AHb1 and AHb2, together play an essential role for normal development of Arabidopsis seedlings. In conclusion, these results suggests that 3-on-3 hemoglobins apart from a role in hypoxic stress play a general role under non-stressed conditions where they are essential for normal development by controlling the level of NO which tends to accumulate in floral buds and leaf hydathodes of plants",
author = "Hebelstrup, {Kim Henrik} and Peter Hunt and Elizabeth Dennis and Jensen, {Susie Bjerregaard} and Jensen, {Erik {\O}stergaard}",
year = "2006",
language = "English",
volume = "127",
pages = "157--166",
journal = "Physiol. Plant.",
publisher = "Molekyl{\ae}rbiologisk Institut",
number = "1",

}

RIS

TY - JOUR

T1 - Hemoglobin is essential for normal growth of Arabidopsis organs

AU - Hebelstrup, Kim Henrik

AU - Hunt, Peter

AU - Dennis, Elizabeth

AU - Jensen, Susie Bjerregaard

AU - Jensen, Erik Østergaard

PY - 2006

Y1 - 2006

N2 - In Arabidopsis thaliana, the class I hemoglobin AHb1 is transiently expressed in the hydathodes of leaves and in floral buds from young inflorescences. Nitric oxide (NO) accumulates to high levels in these organs when AHb1 is silenced, indicating an important role in metabolizing NO. AHb1-silenced lines are viable but show a mutant phenotype affecting the regions where AHb1 is expressed. Arabidopsis lines with an insertional knockout or overexpression of AHb2, a class II 3-on-3 hemoglobin, were generated. Seedlings overexpressing AHb2 show enhanced survival of hypoxic stress. The AHb2 knockout lines develop normally. However, when AHb2 knockout is combined with AHb1 silencing, seedlings die at an early vegetative stage suggesting that the two 3-on-3 hemoglobins, AHb1 and AHb2, together play an essential role for normal development of Arabidopsis seedlings. In conclusion, these results suggests that 3-on-3 hemoglobins apart from a role in hypoxic stress play a general role under non-stressed conditions where they are essential for normal development by controlling the level of NO which tends to accumulate in floral buds and leaf hydathodes of plants

AB - In Arabidopsis thaliana, the class I hemoglobin AHb1 is transiently expressed in the hydathodes of leaves and in floral buds from young inflorescences. Nitric oxide (NO) accumulates to high levels in these organs when AHb1 is silenced, indicating an important role in metabolizing NO. AHb1-silenced lines are viable but show a mutant phenotype affecting the regions where AHb1 is expressed. Arabidopsis lines with an insertional knockout or overexpression of AHb2, a class II 3-on-3 hemoglobin, were generated. Seedlings overexpressing AHb2 show enhanced survival of hypoxic stress. The AHb2 knockout lines develop normally. However, when AHb2 knockout is combined with AHb1 silencing, seedlings die at an early vegetative stage suggesting that the two 3-on-3 hemoglobins, AHb1 and AHb2, together play an essential role for normal development of Arabidopsis seedlings. In conclusion, these results suggests that 3-on-3 hemoglobins apart from a role in hypoxic stress play a general role under non-stressed conditions where they are essential for normal development by controlling the level of NO which tends to accumulate in floral buds and leaf hydathodes of plants

M3 - Journal article

VL - 127

SP - 157

EP - 166

JO - Physiol. Plant.

JF - Physiol. Plant.

IS - 1

ER -