Do shoot anatomical characteristics allow rice to grow well under water deficit?

Ouyang, Wenjing; Yin, Xinyou; Struik, P.C.

doi:10.1111/jac.12509

Cited by 5 publications

(3 citation statements)

References 82 publications

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“…This fact indicated that an increase in R:S ratio triggered the ratio of N:P in shoots of upland rice. A higher R:S ratio indicated that more photosynthate was allocated to the roots to supply energy for the growth and development of upland rice roots under conditions of acid soil stress (Ouyang et al 2021). Therefore, organic carbon compounds released by roots into the soil were increased to be used by bacteria and AMF.…”

Section: Discussionmentioning

confidence: 99%

Soil biological quality in rhizosphere, growth, and yield of upland rice grown on acid soil after amended biochar enriched sap of Kappaphycus alvarezii

RAKIAN,

KILOWASID,

AFA

et al. 2024

Biodiversitas

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Abstract. Rakian TC, Kilowasid LMH, Afa LO, Riskyana A, Nurazizah, Wijayanti Y, Bahrun A, Subair I, Rahni NM, Alam S, Sarawa, Karimuna L. 2023. Soil biological quality in rhizosphere, growth, and yield of upland rice grown on acid soil after amended biochar enriched sap of Kappaphycus alvarezii. Biodiversitas 24: 6780-6792. Biological soil quality is essential in evaluating soil management practices using biochar enriched for upland rice growth on acid soil. Therefore, the study aimed to (i) analyze the effect of biochar-enriched sap of Kappaphycus alvarezii (K-sap) on the abundance of Arbuscular Mycorrhizae Fungi (AMF), bacteria, and protozoa in rhizosphere soil, growth, and yield of upland rice, and (ii) the relationship between the abundance of soil biota and the growth and yield components, as well as straw N, P, and K content on acid soil. Four upland rice were grown on acid soil incubated with biochar-enriched sap for two weeks in pots. Nine treatments of the biochar-enriched sap were tested, namely control, 5% biochar-0% K-sap, 5% biochar-5% K-sap, 5% biochar -10% K-sap, 5% biochar-15% K-sap, 7.5% biochar-0% K-sap, 7.5% biochar-5% K-sap, 7.5% biochar-10% K-sap, and 7.5% biochar-15% K-sap. Each treatment was three replicates in a randomized block design. The results demonstrated that the AMF spores quantity decreased while flagellates increased in the soil rhizosphere. The P and K content increased, the N:P decreased, and P:K ratio varied in the straw of the upland rice. Plant height and total spikelets increased, while root dry weight and roots to shoots ratio (R:S) decreased with biochar enriched. The abundance of AMF spores and flagellates correlated positively and negatively with R:S. Furthermore, R:S was negatively correlated with plant height and total spikelets. Plant height and total spikelets showed a positive correlation, while root dry weight and R:S was negatively correlated with K content in shoot tissue. The P and K contents with N:P ratio and N:P with P:K were negatively correlated. In conclusion, biochar-enriched K-sap effectively regulated the activity and composition of soil biota in the rhizosphere, influencing upland rice's growth, yield, and nutrient balance uptake on acid soils.

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Section: Discussionmentioning

confidence: 99%

Soil biological quality in rhizosphere, growth, and yield of upland rice grown on acid soil after amended biochar enriched sap of Kappaphycus alvarezii

RAKIAN,

KILOWASID,

AFA

et al. 2024

Biodiversitas

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“…The epidermis, cortex thickness, and number of vascular bundles were also significantly increased in the crosses compared to the parents. Most leaf anatomical structures are strongly impacted by water deprivation in plants [54]. Since leaves are the principal organs of internal water removal, drought-tolerant rice genotypes perform leaf anatomical modifications to conserve water.…”

Section: Discussionmentioning

confidence: 99%

Biochemical, Anatomical, Genetic, and Yield Assessment of Seven Rice Genotypes (Oryza sativa L.) Subjected to Drought Stress

Abo-Youssef,

Elbagory,

Elsehely

et al. 2023

Agronomy

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Drought stress is one of the main environmental challenges that dramatically reduce global rice production within several agricultural ecosystems. Breeding drought-tolerant rice genotypes is an important sustainable strategy to overcome this constraint. In this work, drought tolerance levels were assessed according to biochemical, anatomical, and molecular aspects, which led to selecting three promising crosses (Sakha 107 × Sakha super 300, Sakha 107 × M206, and Sakha 107 × Sakha 108) that were compared with their parents as controls. The antioxidant capabilities of the chosen potential crosses, such as the ascorbate peroxidase activity (APX), superoxide dismutase activity (SOD), catalase activity (CAT), and total phenolics, were significantly higher compared with their parents under drought stress. Moreover, the promising selected crosses could accumulate greater proline and chlorophyll contents. The potential superiority of the three selected rice crosses was anatomically represented throughout cross-sections of roots, stems, and leaves, which recorded higher values of cross-section diameter, epidermal thickness, cortex thickness, mesophyll thickness, and bundle sheath thickness as well as a broader range of xylem vessel diameters than their parents under a water deficit. The observed superiority of the antioxidant activities in the overall drought-tolerance mechanisms and anatomical characteristics reflected their protective role in the adaptation process under water stress. Molecular analyses using inter-simple sequence repeat (ISSR) markers suggested two promising crosses (Sakha 107 × Sakha super 300 and Sakha 107 × M206) to be the most suitable crosses for saving water. They had the highest similarity values and were grouped in a distinct cluster. The relative gene expression of OsACS2, OsCML31, OsCYP94C2a, and OsSRO1c was significantly elevated in the two selected drought-tolerant rice genotypes (Sakha 107 × Sakha super 300 and Sakha 107 × M206).

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“…Plant height, number of tillers and leaves, and the dry weight of the roots and shoots showed that the reduction of field capacity had a substantial impact on rice plant growth. Plants under drought stress have a reduced capacity to absorb water and nutrients, which inhibits photosynthesis and reduces plant growth, including plant height [11].…”

Section: Growth Charactersmentioning

confidence: 99%

Effect of silicon priming on germination and growth of rice (Oryza sativa L.) in drought condition

Ulfianida,

Rachmawati

2024

BIO Web Conf.

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Drought in some agricultural areas due to global climate change is an obstacle in rice cultivation. ‘IR 64’ is one of the commonly grown rice cultivars but this cultivar is very susceptible to drought. Seed priming treatment with silicon is one way to increase rice resistance to drought stress. This study aimed to determine the effect of seed priming using calcium silicate on germination and growth responses of rice under drought condition. This study used two types of treatments. Silicon priming concentration and drought stress in a completely randomized experimental design. The concentration of calcium silicate (0, 1, 2 and 3 mM). Drought treatment with different field capacity (100%, 80%, 60% and 40%). The observed parameters were percentage and rate of germination, plant height, number of leaves and tillers, chlorophyll, and carotenoid levels. On the fifth day, the percentage of germination in the control, 1, 2 and 3 mM of silicon priming was 78.67%, 80%, 96% and 97.33%, respectively. Along with decreasing field capacity, rice plant growth decreases. Seed priming with calcium silicate showed a trend of increasing in percentage and rate of germination, plant height, number of leaves and number of tillers, chlorophyll dan carotenoid levels.

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Do shoot anatomical characteristics allow rice to grow well under water deficit?

Cited by 5 publications

References 82 publications

Soil biological quality in rhizosphere, growth, and yield of upland rice grown on acid soil after amended biochar enriched sap of Kappaphycus alvarezii

Soil biological quality in rhizosphere, growth, and yield of upland rice grown on acid soil after amended biochar enriched sap of Kappaphycus alvarezii

Biochemical, Anatomical, Genetic, and Yield Assessment of Seven Rice Genotypes (Oryza sativa L.) Subjected to Drought Stress

Effect of silicon priming on germination and growth of rice (Oryza sativa L.) in drought condition

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