<i>Carbon Starved Anther</i> modulates sugar and ABA metabolism to protect rice seed germination and seedling fitness

Sun, Liqing; Wang, Duoxiang; Li, Jingbin; Jin, Shi; Hu, Yangyang; Yu, Jing; Chen, Xiaofei; Chen, Sixue; Liang, Wanqi; Zhang, Dabing

doi:10.1093/plphys/kiab391

Cited by 15 publications

(6 citation statements)

References 47 publications

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“…For instance, TBGI133263 has a role in rice drought tolerance and photosynthesis mechanism 73 . Its existence was also proved to protect rice seed germination 74 . Its enzyme product, β-Glucosidase, has an impact on the rice root 75 , 76 .…”

Section: Discussionmentioning

confidence: 99%

Deep polygenic neural network for predicting and identifying yield-associated genes in Indonesian rice accessions

Dominic

Cenggoro

Budiarto

et al. 2022

Sci Rep

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As the fourth most populous country in the world, Indonesia must increase the annual rice production rate to achieve national food security by 2050. One possible solution comes from the nanoscopic level: a genetic variant called Single Nucleotide Polymorphism (SNP), which can express significant yield-associated genes. The prior benchmark of this study utilized a statistical genetics model where no SNP position information and attention mechanism were involved. Hence, we developed a novel deep polygenic neural network, named the NucleoNet model, to address these obstacles. The NucleoNets were constructed with the combination of prominent components that include positional SNP encoding, the context vector, wide models, Elastic Net, and Shannon’s entropy loss. This polygenic modeling obtained up to 2.779 of Mean Squared Error (MSE) with 47.156% of Symmetric Mean Absolute Percentage Error (SMAPE), while revealing 15 new important SNPs. Furthermore, the NucleoNets reduced the MSE score up to 32.28% compared to the Ordinary Least Squares (OLS) model. Through the ablation study, we learned that the combination of Xavier distribution for weights initialization and Normal distribution for biases initialization sparked more various important SNPs throughout 12 chromosomes. Our findings confirmed that the NucleoNet model was successfully outperformed the OLS model and identified important SNPs to Indonesian rice yields.

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Section: Discussionmentioning

confidence: 99%

Deep polygenic neural network for predicting and identifying yield-associated genes in Indonesian rice accessions

Dominic

Cenggoro

Budiarto

et al. 2022

Sci Rep

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Section: Aba: the Core Factor In The Maintenance Of Seed Dormancy And...mentioning

confidence: 99%

“…ABA-GE can be cleaved by β-glucosidases to form active ABA [19,24]. One of the MYB transcription factor members was recently reported to mediate the deconjugation of ABA-GE to ABA at a very early imbibition time and optimize seed germination in rice [25]. The expressions of the NCED and ABA8ox genes play significant roles in the control of the ABA level and therefore seed dormancy and germination.…”

Section: Aba Metabolism Influences Rice Seed Dormancy and Germinationmentioning

confidence: 99%

Understanding of Hormonal Regulation in Rice Seed Germination

Gong

Liu

et al. 2022

Life

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Seed germination is a critical stage during the life cycle of plants. It is well known that germination is regulated by a series of internal and external factors, especially plant hormones. In Arabidopsis, many germination-related factors have been identified, while in rice, the important crop and monocot model species and the further molecular mechanisms and regulatory networks controlling germination still need to be elucidated. Hormonal signals, especially those of abscisic acid (ABA) and gibberellin (GA), play a dominant role in determining whether a seed germinates or not. The balance between the content and sensitivity of these two hormones is the key to the regulation of germination. In this review, we present the foundational knowledge of ABA and GA pathways obtained from germination research in Arabidopsis. Then, we highlight the current advances in the identification of the regulatory genes involved in ABA- or GA-mediated germination in rice. Furthermore, other plant hormones regulate seed germination, most likely by participating in the ABA or GA pathways. Finally, the results from some regulatory layers, including transcription factors, post-transcriptional regulations, and reactive oxygen species, are also discussed. This review aims to summarize our current understanding of the complex molecular networks involving the key roles of plant hormones in regulating the seed germination of rice.

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“…Sugars are the constituents of main anther, and play essential roles in cell structure formation, energy supply, and male fertility in response to environmental conditions [ 9 ]. In rice, the expression of Cell Wall Invertase 3 ( OsCWIN3/OsINV4 ) correlates with sucrose accumulation and pollen sterility depending on temperature [ 10 ], while two MYB domain proteins, Carbon Starved Anther (CSA) and CSA2, regulate sugar partitioning and male fertility in response to photoperiod [ 11 , 12 , 13 , 14 ]. The sugar transporter OsXa13/OsSWEET11 plays essential roles in pollen development and disease resistance against bacterial blight [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Source-To-Sink Transport of Sugar and Its Role in Male Reproductive Development

Kim

Zhang

2022

Genes

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Sucrose is produced in leaf mesophyll cells via photosynthesis and exported to non-photosynthetic sink tissues through the phloem. The molecular basis of source-to-sink long-distance transport in cereal crop plants is of importance due to its direct influence on grain yield—pollen grains, essential for male fertility, are filled with sugary starch, and rely on long-distance sugar transport from source leaves. Here, we overview sugar partitioning via phloem transport in rice, especially where relevant for male reproductive development. Phloem loading and unloading in source leaves and sink tissues uses a combination of the symplastic, apoplastic, and/or polymer trapping pathways. The symplastic and polymer trapping pathways are passive processes, correlated with source activity and sugar gradients. In contrast, apoplastic phloem loading/unloading involves active processes and several proteins, including SUcrose Transporters (SUTs), Sugars Will Eventually be Exported Transporters (SWEETs), Invertases (INVs), and MonoSaccharide Transporters (MSTs). Numerous transcription factors combine to create a complex network, such as DNA binding with One Finger 11 (DOF11), Carbon Starved Anther (CSA), and CSA2, which regulates sugar metabolism in normal male reproductive development and in response to changes in environmental signals, such as photoperiod.

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Carbon Starved Anther modulates sugar and ABA metabolism to protect rice seed germination and seedling fitness

Cited by 15 publications

References 47 publications

Deep polygenic neural network for predicting and identifying yield-associated genes in Indonesian rice accessions

Deep polygenic neural network for predicting and identifying yield-associated genes in Indonesian rice accessions

Understanding of Hormonal Regulation in Rice Seed Germination

Source-To-Sink Transport of Sugar and Its Role in Male Reproductive Development

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