Carbon Balance of Sorghum Plants during Osmotic Adjustment to Water Stress

McCree, K. J.; Kallsen, Craig E.; Richardson, Steven G.

doi:10.1104/pp.76.4.898

Cited by 47 publications

(32 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…4). McCree et al (1984) indicated that carbon stored during water stress was immediately available for biomass synthesis on rewatering, and several studies suggest that respiration may account for a large proportion of the seasonal losses of starch (Hansen and Grausland, 1973;Lai, 1987). These reports suggest that accumulated starch in the roots of 'Spring' trees might be immediately hydrolyzed and used following irrigation in August, the hottest month of the year.…”

Section: Discussionmentioning

confidence: 99%

Effect of Initiation Timing of Drought Stress on Carbohydrate Content and Vegetative Growth in Japanese Apricot (Prunus mume Sieb. et Zucc.) ‘Nanko’

Tsuchida

Negoro

Hishiike

2011

J. Japan. Soc. Hort. Sci.

View full text Add to dashboard Cite

The effects of initiation timing of drought stress on the carbohydrate content and growth of Japanese apricot (Prunus mume Sieb. et Zucc.) 'Nanko' tree were investigated. Three-year-old trees were subjected to drought stress for three months in May ('Spring') and August ('Summer'), respectively. Irrigation was started immediately after drought stress treatment had finished. The starch concentration in the roots of stressed trees increased in both 'Spring' and 'Summer' two months after starting drought stress treatment and rapidly decreased just after starting irrigation in 'Spring'; however, it still temporarily increased in 'Summer'. These different results were attributed to seasonal changes in the carbohydrate demand. The dry matter weight of each tree organ in February of the following year was suppressed by drought stress, particularly in 'Spring'. This result indicates that, if a tree suffers drought stress in spring, vegetative growth is suppressed more seriously than in summer and tree growth, declined by suffering from severe and long-term drought stress, will hardly recover even the tree is reirrigated. The total starch in all organs of the drought-stressed trees in February of the following year was significantly less than that in well-irrigated trees. These results indicate that severe drought stress for three months inhibits not only current tree growth but also the accumulation of carbohydrates that is necessary for the following year's growth. Hence, irrigation to avoid a fatal growth decline due to severe drought stress is needed during the current growth stage, especially in the early growth stage in spring.

show abstract

Section: Discussionmentioning

confidence: 99%

Effect of Initiation Timing of Drought Stress on Carbohydrate Content and Vegetative Growth in Japanese Apricot (Prunus mume Sieb. et Zucc.) ‘Nanko’

Tsuchida

Negoro

Hishiike

2011

J. Japan. Soc. Hort. Sci.

View full text Add to dashboard Cite

show abstract

“…The diversion of carbon into these processes could lead to inadequate availability of carbon for growth. During the initial exposure of plant tissues to osmotic stresses, there was a reduction in carbon use efficiency if the osmotic stress was due to salinity, whereas, there was a small increase in carbon use efficiency if dessication stress was imposed (17,18,26).…”

mentioning

confidence: 99%

Carbon Use Efficiency and Cell Expansion of NaCl-Adapted Tobacco Cells

Schnapp

Bressan²,

Hasegawa³

1990

Plant Physiol.

View full text Add to dashboard Cite

Carbon use efficiencies (gram cell organic dry weight accumulated per gram sugar assimilated from the medium) of unadapted and NaCI-adapted (428 millimolar) cells of tobacco (Nicotiana tabacum L. var Wisconsin 38) were determined to evaluate metabolic costs associated with growth and survival in a saline environment. No net increase in carbon costs was associated with salt adaptation. At low substrate levels, carbon use efficiencies of unadapted and NaCI-adapted cells were not appreciably different (0.495 and 0.422, respectively) and at higher substrate levels carbon use efficiency of NaCI-adapted cells was clearly higher than that of unadapted cells. These results indicate that a homeostasis of metabolic efficiency is established after cells have adapted to NaCI. Altered carbon availability does not cause the reduced cell volume that results from adaptation to NaCI. This does not preclude, however, the possibility that altered intracellular partitioning of carbon affects cell expansion.

show abstract

“…4A). O aumento do teor de carboidratos solúveis se dá no início do estresse hídrico, por causa da paralisação do crescimento, com certa manutenção da atividade fotossintética e, com a severidade do déficit hídrico, devido à hidrólise de amido (McCree et al, 1984;Pimentel & Rossiello, 1995). No que se refere ao acúmulo de aminoácidos livres (Fig.…”

Section: Resultsunclassified

Relações Hídricas Em Dois Híbridos De Milho Sob Dois Ciclos De Deficiência Hídrica

Pimentel

1999

Pesq. agropec. bras.

View full text Add to dashboard Cite

Neste trabalho foram estudadas as relações hídricas de dois híbridos de milho (Zea mays L.), em casa de vegetação: o IAC 8222 (híbrido com tolerância ambiental) e o DINA 10 (híbrido comum); submetidos a um ou a dois ciclos de estresse, aos 30 e 46 DAP. O IAC 8222 manteve o potencial hídrico de folha (psihf) superior ao do DINA no primeiro ciclo de estresse e no segundo ciclo, em plantas que sofreram os dois ciclos (com endurecimento), no sexto e último dia de deficiência hídrica, não havendo diferenças em relação ao conteúdo hídrico relativo (CHR) entre os híbridos. Houve um aumento da concentração de açúcares solúveis e de aminoácidos com a deficiência hídrica, sem diferenças entre os híbridos no primeiro ciclo de déficit hídrico, e com aumento significativo somente na concentração de aminoácidos no DINA 10 submetido aos dois ciclos, no último dia do segundo ciclo. A concentração de K+ não variou nem com os ciclos nem entre híbridos. Portanto, só houve diferenças na acumulação de solutos osmóticos entre os híbridos, quanto ao teor de aminoácidos no DINA 10 submetido aos dois ciclos, no segundo ciclo. Contudo, o IAC 8222 manteve o seu psihf alto, podendo ter promovido um ajuste do coeficiente de extensibilidade de parede, que foi acentuado com o endurecimento.

show abstract

Carbon Balance of Sorghum Plants during Osmotic Adjustment to Water Stress

Abstract: The daily (24-hour)

Cited by 47 publications

References 12 publications

Effect of Initiation Timing of Drought Stress on Carbohydrate Content and Vegetative Growth in Japanese Apricot (Prunus mume Sieb. et Zucc.) ‘Nanko’

Effect of Initiation Timing of Drought Stress on Carbohydrate Content and Vegetative Growth in Japanese Apricot (Prunus mume Sieb. et Zucc.) ‘Nanko’

Carbon Use Efficiency and Cell Expansion of NaCl-Adapted Tobacco Cells

Relações Hídricas Em Dois Híbridos De Milho Sob Dois Ciclos De Deficiência Hídrica

Contact Info

Product

Resources

About