The Rice Shoot in Relation to Oxygen Supply and Root Growth in Seedlings Germinating Under Water

Kordan, H. A.

doi:10.1111/j.1469-8137.1974.tb01297.x

Cited by 35 publications

(24 citation statements)

References 2 publications

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“…1A, top). Coleoptile growth was slower in anaerobically grown rice, and most obviously, the radicle did not elongate, consistent with the requirement for trace amounts of oxygen for root development (34). Rice grains were also germinated and grown in anaerobic conditions for 24 h, followed by a switch to growth in aerobic conditions for 48 h or germinated and grown in aerobic conditions for 24 h, followed by a switch to growth in anaerobic conditions for 48 h (Fig.…”

Section: Mitochondrial Ultrastructure Is Independent Of Oxygen Availamentioning

confidence: 90%

Oxygen Initiation of Respiration and Mitochondrial Biogenesis in Rice

Howell

Cheng

Murcha

et al. 2007

Journal of Biological Chemistry

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Rice growth under aerobic and anaerobic conditions allowed aspects of mitochondrial biogenesis to be identified as dependent on or independent of an oxygen signal. Analysis of transcripts encoding mitochondrial components found that a subset of these genes respond to oxygen (defined as aerobic), whereas others are relatively unaffected by oxygen availability. Mitochondria formed during growth in anaerobic conditions had reduced protein levels of tricarboxylic acid cycle components and cytochrome-containing complexes of the respiratory chain and repressed respiratory functionality. In general, the capacity of the general import pathway was found to be significantly lower in mitochondria isolated from tissue grown under anaerobic conditions, whereas the carrier import pathway capacity was not affected by changes in oxygen availability. Transcript levels of genes encoding components of the protein import apparatus were generally not affected by the absence of oxygen, and their protein abundance was severalfold higher in mitochondria isolated from anaerobically grown tissue. However, both transcript and protein abundances of the subunits of the mitochondrial processing peptidase, which in plants is integrated into the cytochrome bc 1 complex, were repressed under anaerobic conditions. Therefore, in this system, an increase in import capacity is correlated with an increase in the abundance of the cytochrome bc 1 complex, which is ultimately dependent on the presence of oxygen, providing a link between the respiratory chain and protein import apparatus.

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Section: Mitochondrial Ultrastructure Is Independent Of Oxygen Availamentioning

confidence: 90%

Oxygen Initiation of Respiration and Mitochondrial Biogenesis in Rice

Howell

Cheng

Murcha

et al. 2007

Journal of Biological Chemistry

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“…The seeds were sown at a depth of 25 mm. A coleoptile length equivalent to the soil-covering depth was required for the tip to reach the oxidized soil-water transition layer for the transport oxygen to the growing region in order to initiate the first leaf growth (Kordan 1974(Kordan , 1976. In the lowland soil, in some genotypes like Fujisaka 5, Italica livorono, RP1669, the coleoptile length was not sufficient to reach the oxygenated soilwater transition layer (Table 2), which may account for the factor that these genotypes showed a poor seedling establishment in this soil.…”

Section: Resultsmentioning

confidence: 99%

Seedling establishment of anoxia-tolerant rice (Oryza sativaL.) as affected by anaerobic seeding in two different soils

Biswas

Ando

Kakuda

2002

Soil Science and Plant Nutrition

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“…The root growth appeared to block seeds germination under poor oxygenated condition until the shoots have been produced, thereby, providing a mechanism to conserve energy during the early phase of seed germination (Cobb and Kennedy, 1987). Biswas and Yamauchi (1997) observed that coleoptile tip of the anoxia tolerant genotype could penetrate the reduced soil layer to reach the oxygenated layer of soil/water at 4 days after seeding to establish a snorkel mechanism to transport oxygen at the growing region (Kordan, 1974(Kordan, , 1976. The root growth was restricted from 0-6 days after seeding.…”

Section: Rootmentioning

confidence: 99%

Acetic acid Effect on Seedling Growth of Some Anoxia-tolerant Land Race Rice (<i>Oryza sativa</i> L) Genotypes

et al. 2010

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An in vitro study was conducted to observe the effect of acetic acid in the process of seedling growth of five anoxia-tolerant land race rice genotypes (Tepi boro, Chaita boro, Bashful, Jahmir and Banajira) under hypoxic condition at two pH levels: pH 5 and pH 7. The acetic acid concentrations were 0, 4, 8 and 12 mM. Seedlings were grown in the test tubes containing 18 ml acetic acid-water solution (equivalent to 50 mm water column above the seed) under the two pH conditions at 30 °C for 7 days in dark. The nature and extent of the genotype responses varied with the concentrations of acetic acid and pH levels. Increased acetic acid concentration affected coleoptile length, mesocotyl length, 1 st leaf length and root length significantly. The genotype Bashful was able to produce the longest 1 st leaf length at pH 5. The 1st leaf growth of genotype Jahmir varied a little with the pH levels used in this study. Higher pH (pH 7) appeared to minimize acetic acid shock of the seedlings in the process of development.

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The Rice Shoot in Relation to Oxygen Supply and Root Growth in Seedlings Germinating Under Water

Cited by 35 publications

References 2 publications

Oxygen Initiation of Respiration and Mitochondrial Biogenesis in Rice

Oxygen Initiation of Respiration and Mitochondrial Biogenesis in Rice

Seedling establishment of anoxia-tolerant rice (Oryza sativaL.) as affected by anaerobic seeding in two different soils

Acetic acid Effect on Seedling Growth of Some Anoxia-tolerant Land Race Rice (<i>Oryza sativa</i> L) Genotypes

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