Boundary Value Problems最新文献_第6页

Deep genome skimming reveals the hybrid origin of Pseudosasa gracilis (Poaceae: Bambusoideae). 深入基因组研究揭示了 Pseudosasa gracilis（蒲葵科：Bambusoideae）的杂交起源。

IF 4.8 4区数学

Boundary Value Problems Pub Date : 2023-06-07 eCollection Date: 2024-05-01 DOI: 10.1016/j.pld.2023.06.001

Xiang-Zhou Hu, Cen Guo, Sheng-Yuan Qin, De-Zhu Li, Zhen-Hua Guo

{"title":"Deep genome skimming reveals the hybrid origin of Pseudosasa gracilis (Poaceae: Bambusoideae).","authors":"Xiang-Zhou Hu, Cen Guo, Sheng-Yuan Qin, De-Zhu Li, Zhen-Hua Guo","doi":"10.1016/j.pld.2023.06.001","DOIUrl":"10.1016/j.pld.2023.06.001","url":null,"abstract":"Pseudosasa gracilis (Poaceae: Bambusoideae) is a temperate woody bamboo species endemic to South-central China with a narrow distribution. Previous phylogenetic studies revealed an unexpected, isolated phylogenetic position of Ps. gracilis. Here we conducted phylogenomic analysis by sampling populations of Ps. gracilis and its sympatric species Ps. nanunica and Sinosasa polytricha reflecting different genomic signals, by deep genome skimming. Integrating molecular evidence from chloroplast genes and genome-wide SNPs, we deciphered the phylogenetic relationships of Ps. gracilis. Both plastid and nuclear data indicate that Ps. gracilis is more closely related to Sinosasa, which is discordant with the taxonomic treatment. To further explore this molecular-morphological conflict, we screened 411 \"perfect-copy\" syntenic genes to reconstruct phylogenies using both the concatenation and coalescent methods. We observed extensive discordance between gene trees and the putative species tree. A significant hybridization event was detected based on 411 genes from the D subgenome, showing Ps. gracilis was a hybrid descendant between Sinosasa longiligulata and Ps. nanunica, with 63.56% and 36.44% inheritance probabilities of each parent. Moreover, introgression events were detected in the C subgenome between Ps. gracilis and S. polytricha in the same distribution region. Our findings suggest that sympatric hybridization and introgression play a crucial role in the origin of Ps. gracilis. By providing an empirical example of bamboo of hybrid origin using comprehensive analyses based on genomic data from different inheritance systems and morphological characters, our study represents a step forward in understanding of reticulate evolution of bamboos.","PeriodicalId":55333,"journal":{"name":"Boundary Value Problems","volume":"2014 1","pages":"344-352"},"PeriodicalIF":4.8,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11119509/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87838321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Uniform stability of a strong time-delayed viscoelastic system with Balakrishnan–Taylor damping 具有Balakrishnan-Taylor阻尼的强时滞粘弹性系统的均匀稳定性

IF 1.7 4区数学

Boundary Value Problems Pub Date : 2023-05-31 DOI: 10.1186/s13661-023-01749-8

Haiyan Li

引用次数: 1

A relation-theoretic set-valued version of Prešić-Ćirić theorem and applications Prešić-Ćirić定理的关系论集值版本及其应用

IF 1.7 4区数学

Boundary Value Problems Pub Date : 2023-05-31 DOI: 10.1186/s13661-023-01748-9

S. Shukla, Shweta Rai, Rahul Shukla

引用次数: 2

The Nasal Endoscopic Features of Postnasal Drip: A Cross Sectional Study. 鼻后滴流的鼻内窥镜特征：一项横断面研究

IF 1.1 4区数学

Boundary Value Problems Pub Date : 2023-05-29 eCollection Date: 2024-01-01 DOI: 10.1055/s-0043-1767799

Nur Eliana Tarmizi, Aneeza Wan Hamizan, Chong Sian Ng, Hardip Singh Gendeh, Lum Sai Guan, Farah Dayana Zahedi, Marina Mat Baki, Salina Husain

{"title":"The Nasal Endoscopic Features of Postnasal Drip: A Cross Sectional Study.","authors":"Nur Eliana Tarmizi, Aneeza Wan Hamizan, Chong Sian Ng, Hardip Singh Gendeh, Lum Sai Guan, Farah Dayana Zahedi, Marina Mat Baki, Salina Husain","doi":"10.1055/s-0043-1767799","DOIUrl":"10.1055/s-0043-1767799","url":null,"abstract":"Introduction Patients with chronic rhinitis suffer from postnasal drip (PND) but this symptom is not well addressed. Nasal endoscopy may aid in identifying PND. Well described endoscopic features of PND are presence of secretions in the posterior nasal cavity, diffuse erythema, and hemorrhagic spots in the nasopharynx, but these have not been formally studied. Objectives The present study aims to assess the association of nasal endoscopic features with PND among rhinitis patients. This will guide clinicians to interpret the nasal endoscopic findings appropriately. Methods Adults (≥ 18 years old) with chronic rhinitis were consecutively recruited at an Otorhinolaryngology outpatient clinic in a tertiary referral center. The patients were grouped into either \"Rhinitis with PND\" or \"Rhinitis only.\" The endoscopic features of PND were scored as: Secretions in the posterior nasal cavity (yes/no), erythema in the nasopharynx (none, roof only, diffuse), hemorrhagic spots (yes/no), then were compared between groups. Results There were 98 patients included (age 32.32 ± 11.33 years old, 61.2% female, 61.2% PND). Presence of secretions in the posterior nasal cavity was associated with PND (\"Rhinitis with PND\" versus \"Rhinitis only,\" 78.3 versus 55.3; p = 0.02; Odds ratio: 2.81; 95% confidence interval [CI]: 1.08-7.32). Diffuse erythema of the nasopharynx was more frequent in \"rhinitis only\" compared with those with PND (76.3 versus 53.3%; p = 0.02). Hemorrhagic spots were equally present in both groups (11.7 versus 18.4%; p = 0.35). Conclusion Presence of secretions in the posterior nasal cavity may indicate bothersome PND among patients with rhinitis. Diffuse erythema of the nasopharynx and hemorrhagic spots are a nonspecific sign of inflammation.","PeriodicalId":55333,"journal":{"name":"Boundary Value Problems","volume":"2014 1","pages":"e95-e100"},"PeriodicalIF":1.1,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10843929/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88103791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamics properties for a viscoelastic Kirchhoff-type equation with nonlinear boundary damping and source terms 具有非线性边界阻尼和源项的粘弹性Kirchhoff型方程的动力学性质

IF 1.7 4区数学

Boundary Value Problems Pub Date : 2023-05-29 DOI: 10.1186/s13661-023-01746-x

M. Saker, N. Boumaza, Billel Gheraibia

引用次数: 1

Generalized fractional calculus in Banach spaces and applications to existence results for boundary value problems Banach空间中的广义分式微积分及其在边值问题存在性结果中的应用

IF 1.7 4区数学

Boundary Value Problems Pub Date : 2023-05-24 DOI: 10.1186/s13661-023-01745-y

H. A. Salem, M. Cichoń, W. Shammakh

引用次数: 2

Existence and H-U stability of a tripled system of sequential fractional differential equations with multipoint boundary conditions 具有多点边界条件的三阶顺序分数阶微分方程组的存在性和H-U稳定性