The case for improving crop carbon sink strength or plasticity for a CO2-rich future

Dingkuhn, Michaël; Luquet, Delphine; Fabre, Denis; Muller, Bertrand; Yin, Xinyou; Paul, Matthew J.

doi:10.1016/j.pbi.2020.05.012

Cited by 57 publications

(45 citation statements)

References 116 publications

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“…The sucrose content in leaves increased after waterlogging, but decreased during the harvest stage (Supplementary Figures 1, 2). Therefore, we speculated that the increase of Pn was accompanied by the increase of photosynthate, but the transportation of the photosynthate was blocked and thus accumulated in the stem, which was consistent with the results of previous studies (Camisón et al, 2020;Dingkuhn et al, 2020). There are two possible reasons to account for this.…”

Section: Discussionsupporting

confidence: 90%

Physiological and Expressional Regulation on Photosynthesis, Starch and Sucrose Metabolism Response to Waterlogging Stress in Peanut

et al. 2021

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Waterlogging has negative effects on crop yield. Physiological and transcriptome data of two peanut cultivars [Zhongkaihua 1 (ZKH 1) and Huayu 39 (HY 39)] were studied under normal water supply and waterlogging stress for 5 or 10 days at the flowering stage. The results showed that the main stem height, the number of lateral branches, lateral branch length, and the stem diameter increased under waterlogging stress, followed by an increase in dry matter accumulation, which was correlated with the increase in the soil and plant analysis development (SPAD) and net photosynthetic rate (Pn) and the upregulation of genes related to porphyrin and chlorophyll metabolism and photosynthesis. However, the imbalance of the source–sink relationship under waterlogging was the main cause of yield loss, and waterlogging caused an increase in the sucrose and soluble sugar contents and a decrease in the starch content; it also decreased the activities of sucrose synthetase (SS) and sucrose phosphate synthetase (SPS), which may be due to the changes in the expression of genes related to starch and sucrose metabolism. However, the imbalance of the source–sink relationship led to the accumulation of photosynthate in the stems and leaves, which resulted in the decrease of the ratio of pod dry weight to total dry weight (PDW/TDW) and yield. Compared with ZKH 1, the PDW of HY 39 decreased more probably because more photosynthate accumulated in the stem and leaves of HY 39 and could not be effectively transported to the pod.

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Section: Discussionsupporting

confidence: 90%

Physiological and Expressional Regulation on Photosynthesis, Starch and Sucrose Metabolism Response to Waterlogging Stress in Peanut

et al. 2021

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“…In this case, limitation of triose phosphate utilization results in a downregulation of photosynthesis to prevent over-reduction of chloroplasts and photooxidative damage. Under these conditions, plants cannot realize their full photosynthetic potential and may not achieve their maximum biomass production and reproductive success (35). Based on these two considerations, proper timing of storage organ formation is important for overall plant performance.…”

Section: Control Of Storage Organ Initiation Is Crucial For Plant Developmentmentioning

confidence: 99%

Tuber and Tuberous Root Development

Zierer

Rüscher

Sonnewald

et al. 2021

Annu. Rev. Plant Biol.

106

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Root and tuber crops have been an important part of human nutrition since the early days of humanity, providing us with essential carbohydrates, proteins, and vitamins. Today, they are especially important in tropical and subtropical regions of the world, where they help to feed an ever-growing population. Early induction and storage organ size are important agricultural traits, as they determine yield over time. During potato tuberization, environmental and metabolic status are sensed, ensuring proper timing of tuberization mediated by phloem-mobile signals. Coordinated cellular restructuring and expansion growth, as well as controlled storage metabolism in the tuber, are executed. This review summarizes our current understanding of potato tuber development and highlights similarities and differences to important tuberous root crop species like sweetpotato and cassava. Finally, we point out knowledge gaps that need to be filled before a complete picture of storage organ development can emerge. Expected final online publication date for the Annual Review of Plant Biology, Volume 72 is May 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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“…By contrast, they displayed a gradual 3 increase in embryo at 5-20 DAF. 3 T6P and its target protein SnRK1 3 Trehalose-6-phospate (T6P) signals the availability of sucrose in plant cells through the 3 feast-famine kinase, SnRK1 (O'Hara et al, 2013; Paul et al, 2017;Dingkuhn et al, 2020).…”

mentioning

confidence: 99%

Integration of embryo-endosperm interaction into a holistic and dynamic picture of seed development using a rice mutant with notched-belly grains

Tao

Xiao

et al. 2021

Preprint

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The interaction between the embryo and endosperm affects seed development, an essential process in yield formation in crops such as rice. Signals that communicate between embryo and endosperm are largely unknown. Here we use the notched-belly (NB) mutant with impaired communication between embryo and endosperm to evaluate 1) the impact of embryo on developmental staging of the endosperm; 2) signaling pathways emanating from the embryo that regulate endosperm development. Hierachical clustering of mRNA datasets from embryo and endosperm samples collected through development in NB and wild type showed a delaying effect of the embryo on the developmental transition of the endosperm by extending the middle stage. K-means clustering further identified coexpression modules of gene sets specific for embryo and endosperm development. Combined gene expression and biochemical analysis showed that T6P-SnRK1, gibberellin and auxin signalling from the embryo regulate endosperm developmental transition. The data enable us to propose a new seed developmental staging system for rice and the most detailed signature of rice grain formation to date, that will direct genetic strategies for rice yield improvement.

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The case for improving crop carbon sink strength or plasticity for a CO2-rich future

Cited by 57 publications

References 116 publications

Physiological and Expressional Regulation on Photosynthesis, Starch and Sucrose Metabolism Response to Waterlogging Stress in Peanut

Physiological and Expressional Regulation on Photosynthesis, Starch and Sucrose Metabolism Response to Waterlogging Stress in Peanut

Tuber and Tuberous Root Development

Integration of embryo-endosperm interaction into a holistic and dynamic picture of seed development using a rice mutant with notched-belly grains

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