Effect of elevated CO2 concentration and nitrate: ammonium ratios on gas exchange and growth of cassava (Manihot esculenta Crantz)

Cruz, Jailson Lopes; Alves, Alfredo Augusto Cunha; LeCain, Daniel R.; Ellis, David; Morgan, Jack A.

doi:10.1007/s11104-013-1869-8

Cited by 44 publications

(32 citation statements)

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“…NH 4 + was reported to be beneficial to growth and photosynthesis of rice seedlings under drought condition (Guo et al, 2007a;Li et al, 2009), mainly by increasing of the carboxylation efficiency and Rubisco activity. As demonstrated by Cruz et al (2014), increasing NH 4 + in the nutrient significantly increased photosynthetic acclimation to CO 2 under elevated CO 2 at beginning growth stage of cassava. Moreover, NH 4 + could increase photosynthetic rate of sunflower plants under salinity condition (Ashraf, 1999).…”

Section: Introductionmentioning

confidence: 82%

“…They found that the biggest fruits were obtained under the 25:75 and 50:50 (NH 4 + :NO 3 − ) treatments in both shaded and unshaded plants. Until now, many studies have focused on the effects of NO 3 − and NH 4 + fertilization on plant photosynthetic physiology, one of the most important metabolic processes affected by N form (Cruz et al, 2014;Guo et al, 2007a,b). However, there is little literature concerning the alleviation role of NH 4 + :NO 3 − in plant photosynthetic responses, chloroplast ultrastructure and root architecture under low light stress.…”

Section: Introductionmentioning

confidence: 99%

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Moderate ammonium:nitrate alleviates low light intensity stress in mini Chinese cabbage seedling by regulating root architecture and photosynthesis

Liao

et al. 2015

Scientia Horticulturae

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Section: Introductionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Moderate ammonium:nitrate alleviates low light intensity stress in mini Chinese cabbage seedling by regulating root architecture and photosynthesis

Liao

et al. 2015

Scientia Horticulturae

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“…In these studies, increased [CO 2 ] has been reported to lead to increased dry matter production in many major food crops, including rice (Baker et al, 1992;Cheng et al, 2009;Roy et al, 2012;Shimono et al, 2008;Ziska et al, 1997), potato (Aien et al, 2014;Chen & Setter, 2012;Conn & Cochran, 2006;Miglietta et al, 1998), and cassava (Cruz et al, 2014;Imai et al, 1984;Rosenthal et al, 2012). To the best of our knowledge, however, no reports have appeared on yam response to elevated [CO 2 ].…”

Section: Discussionmentioning

confidence: 99%

Effects of elevated CO₂ concentration on growth and photosynthesis of Chinese yam under different temperature regimes

Thinh

Shimono

Kumagai

et al. 2017

Plant Production Science

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“…After this period, the less vigorous plant was discarded, and the experiment proceeded with only one plant per pot. After thinning, the substrate was fertilized with a growth nutrient solution, modified from the solution used by Cruz, Alves, LeCain, Ellis, and Morgan (2014 Figure 5D). T positive and h older leaves a conditions ( Fig Figure 5.…”

Section: Experimental Conditions and Plant Culturementioning

confidence: 99%

<b>Salinity reduces carbon assimilation and the harvest index of cassava plants (<i>Manihot esculenta</i> Crantz)

Cruz¹,

Filho²,

Coelho³

et al. 2017

Acta Sci. Agron.

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ABSTRACT. This study was developed to evaluate the effects of salinity on the growth and gas exchange of cassava plants, cultivar Verdinha. The four concentrations of NaCl (mM) were as follows: 0, 20, 40, and 60. Under salinity, the lowest concentration of Na + ions was observed in the tuberous roots; however, the dry matter of tuberous roots was reduced with an application of just 20 mM NaCl. The harvest index was reduced 50% with the highest salt concentration. Salinity reduced carbon assimilation (A), stomatal conductance (g s ), transpiration, and the instantaneous water use efficiency. The correlation between g s and A was high and positive, showing that stomatal movement was one of the responsible for the lower A. Under salt stress, there was an increase in intercellular CO 2 concentration, indicating the impairment of carbon metabolism. Based on the reduction of dry matter of the tuberous roots (reduction of 81% under 60 mM NaCl), it was concluded that cassava is sensitive to salinity. The growth of shoots and the absorbing roots were minimally affected by salinity, even in the situation where A was reduced; therefore, the sensitivity of cassava was related to the high sensitivity of the tuberous roots to the ionic and/or osmotic effects of salinity. Thus, tuberous roots can be the target organ in studies that aim to improve the tolerance of cassava to salinity.Keywords: photosynthesis, dry matter, water use efficiency, harvest index, root:shoot ratio, salt stress.Salinidade reduz a fotossíntese e o índice de colheita da mandioca (Manihot esculenta Crantz) RESUMO. Esse estudo foi desenvolvido para avaliar os efeitos da salinidade sobre as trocas gasosas e crescimento da mandioca, cultivar Verdinha. Quatro concentrações de NaCl, em mM, foram utilizadas: 0, 20, 40 e 60. A menor concentração de Na + foi observada nas raízes tuberosas; entretanto, a matéria seca dessa parte da planta foi reduzida pela aplicação de apenas 20 mM de NaCl. O índice de colheita foi reduzido em até 50% pela salinidade. A aplicação de NaCl reduziu a assimilação de carbono (A), condutância estomática (g s ), transpiração (E) e eficiência no uso de água (EUA). A correlação entre g s e A foi alta e positiva, evidenciando que o movimento estomático foi um dos responsáveis pela menor A. Sob salinidade também existiu aumento na concentração interna de CO 2 , indicando que o NaCl pode ter inibido o metabolismo de carbono das plantas. Com base na redução do acúmulo de matéria seca das raízes tuberosas (redução de 81% sob 60 mM de NaCl) é concluído que essa cultivar de mandioca é bastante sensível à presença de NaCl na solução do solo. A sensibilidade da mandioca esteve relacionada à alta sensibilidade das raízes tuberosas aos efeitos iônicos e/ou osmótico do NaCl. Assim, as raízes tuberosas podem ser o órgão alvo em estudos que visem melhorar a tolerância da mandioca à salinidade.Palavras-chave: fotossíntese, matéria seca, uso eficiente de água, índice de colheita, relação raiz:parte aérea, estresse salino.

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Effect of elevated CO2 concentration and nitrate: ammonium ratios on gas exchange and growth of cassava (Manihot esculenta Crantz)

Cited by 44 publications

References 54 publications

Moderate ammonium:nitrate alleviates low light intensity stress in mini Chinese cabbage seedling by regulating root architecture and photosynthesis

Moderate ammonium:nitrate alleviates low light intensity stress in mini Chinese cabbage seedling by regulating root architecture and photosynthesis

Effects of elevated CO₂ concentration on growth and photosynthesis of Chinese yam under different temperature regimes

<b>Salinity reduces carbon assimilation and the harvest index of cassava plants (<i>Manihot esculenta</i> Crantz)

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Effect of elevated CO2 concentration and nitrate: ammonium ratios on gas exchange and growth of cassava (Manihot esculenta Crantz)

Cited by 44 publications

References 54 publications

Moderate ammonium:nitrate alleviates low light intensity stress in mini Chinese cabbage seedling by regulating root architecture and photosynthesis

Moderate ammonium:nitrate alleviates low light intensity stress in mini Chinese cabbage seedling by regulating root architecture and photosynthesis

Effects of elevated CO2 concentration on growth and photosynthesis of Chinese yam under different temperature regimes

<b>Salinity reduces carbon assimilation and the harvest index of cassava plants (<i>Manihot esculenta</i> Crantz)

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Effects of elevated CO₂ concentration on growth and photosynthesis of Chinese yam under different temperature regimes