A 460-kb DNA Sequence of the Escherichia coli K-12 Genome Corresponding to the 40.1-50.0 min Region on the Linkage Map (Supplement)

Itoh, Takeshi; Aiba, Hirofumi; Baba, Tomoya; Hayashi, Kouji; Inada, Toshifumi; Isono, Katsumi; Kasai, Hiroaki; Kimura, Shigeharu; Kitakawa, Madoka; Kitagawa, Masanari; Makino, Kozo; Miki, Takeyoshi; Mizobuchi, Kiyoshi; Mori, Hirotada; Mori, Tetsuya; Motomura, Kenta; Nakade, Shinsuke; Nakamura, Yoshikazu; Nashimoto, H; Nishio, Yoshihiko; Oshima, Taku; Saito, Noriko; Sampei, G.; Seki, Yoldaş; Horiuchi, Takashi

doi:10.1093/dnares/3.6.441

Cited by 36 publications

(2 citation statements)

References 21 publications

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“…Putative ACC deaminase gene have also been reported several species including R. leguminosarum bv. Trifoli (Itoh et al, 1996 ) and Mesorhizobium loti MAFF303099 (Kaneko et al, 2002 ). However, the expression level of ACC deaminase varies from one organism to another.…”

Section: Genetics and Expression Of Acc Deaminasementioning

confidence: 99%

Biochemistry and genetics of ACC deaminase: a weapon to “stress ethylene” produced in plants

et al. 2015

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1-aminocyclopropane-1-carboxylate deaminase (ACCD), a pyridoxal phosphate-dependent enzyme, is widespread in diverse bacterial and fungal species. Owing to ACCD activity, certain plant associated bacteria help plant to grow under biotic and abiotic stresses by decreasing the level of “stress ethylene” which is inhibitory to plant growth. ACCD breaks down ACC, an immediate precursor of ethylene, to ammonia and α-ketobutyrate, which can be further metabolized by bacteria for their growth. ACC deaminase is an inducible enzyme whose synthesis is induced in the presence of its substrate ACC. This enzyme encoded by gene AcdS is under tight regulation and regulated differentially under different environmental conditions. Regulatory elements of gene AcdS are comprised of the regulatory gene encoding LRP protein and other regulatory elements which are activated differentially under aerobic and anaerobic conditions. The role of some additional regulatory genes such as AcdB or LysR may also be required for expression of AcdS. Phylogenetic analysis of AcdS has revealed that distribution of this gene among different bacteria might have resulted from vertical gene transfer with occasional horizontal gene transfer (HGT). Application of bacterial AcdS gene has been extended by developing transgenic plants with ACCD gene which showed increased tolerance to biotic and abiotic stresses in plants. Moreover, distribution of ACCD gene or its homolog's in a wide range of species belonging to all three domains indicate an alternative role of ACCD in the physiology of an organism. Therefore, this review is an attempt to explore current knowledge of bacterial ACC deaminase mediated physiological effects in plants, mode of enzyme action, genetics, distribution among different species, ecological role of ACCD and, future research avenues to develop transgenic plants expressing foreign AcdS gene to cope with biotic and abiotic stressors. Systemic identification of regulatory circuits would be highly valuable to express the gene under diverse environmental conditions.

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Section: Genetics and Expression Of Acc Deaminasementioning

confidence: 99%

Biochemistry and genetics of ACC deaminase: a weapon to “stress ethylene” produced in plants

et al. 2015

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“…As it is difficult to study, it is possible that this phenomenon has been overlooked heretofore even though this might have important evolutionary consequences (e.g., as a proxy in the evolution of egg shape combined with clutch size [ 21 ], which became surprisingly characteristic in some birds). For example, shorebirds (Limicolae), which have a distinctive clutch of (usually) four very specifically shaped eggs, organise their clutches almost exclusively with the sharp poles centred in the nest cup [ 22 ]. We suggest that this symmetric centring reduces the contact area between the sharp poles and the cooler surrounding environment, and thus functions together with other nest attributes as nest lining and cover [ 17 , 23 ] to improve the heat savings of the entire clutch.…”

Section: Discussionmentioning

confidence: 99%

Different Temperature and Cooling Patterns at the Blunt and Sharp Egg Poles Reflect the Arrangement of Eggs in an Avian Clutch

Šálek

Zárybnická

2015

PLoS ONE

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Incubation is an energetically demanding process during which birds apply heat to their eggs to ensure embryonic development. Parent behaviours such as egg turning and exchanging the outer and central eggs in the nest cup affect the amount of heat lost to the environment from individual eggs. Little is known, however, about whether and how egg surface temperature and cooling rates vary among the different areas of an egg and how the arrangement of eggs within the clutch influences heat loss. We performed laboratory (using Japanese quail eggs) and field (with northern lapwing eggs) experiments using infrared imaging to assess the temperature and cooling patterns of heated eggs and clutches. We found that (i) the sharp poles of individual quail eggs warmed to a higher egg surface temperature than did the blunt poles, resulting in faster cooling at the sharp poles compared to the blunt poles; (ii) both quail and lapwing clutches with the sharp poles oriented towards the clutch centre (arranged clutches) maintained higher temperatures over the central part of the clutch than occurred in those clutches where most of the sharp egg poles were oriented towards the exterior (scattered clutches); and (iii) the arranged clutches of both quail and lapwing showed slower cooling rates at both the inner and outer clutch positions than did the respective parts of scattered clutches. Our results demonstrate that egg surface temperature and cooling rates differ between the sharp and blunt poles of the egg and that the orientation of individual eggs within the nest cup can significantly affect cooling of the clutch as a whole. We suggest that birds can arrange their eggs within the nest cup to optimise thermoregulation of the clutch.

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ATP-Binding Cassette Transporters: Snap-on Complexes?

Younus

Kochkina

Choi

et al. 2022

Subcellular Biochemistry

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A 460-kb DNA Sequence of the Escherichia coli K-12 Genome Corresponding to the 40.1-50.0 min Region on the Linkage Map (Supplement)

Cited by 36 publications

References 21 publications

Biochemistry and genetics of ACC deaminase: a weapon to “stress ethylene” produced in plants

Biochemistry and genetics of ACC deaminase: a weapon to “stress ethylene” produced in plants

Different Temperature and Cooling Patterns at the Blunt and Sharp Egg Poles Reflect the Arrangement of Eggs in an Avian Clutch

ATP-Binding Cassette Transporters: Snap-on Complexes?

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