Development of Casparian strip in rice cultivars

X, Cai; Chen, Tong; Zhou, Quan; Xu, Lei; Qu, Le-Qing; Hua, Xuejun; Lin, Jinxing

doi:10.4161/psb.5.12.13545

Cited by 6 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3). This is in agreement with earlier reports on rice and maize (Karahara et al 2004;Cai et al 2011;Zhou et al 2011). Interestingly, development of a BEX was seen in mangrove roots (Figs 3,4 & 6), while a uniseriate exodermis is more common in other plants.…”

Section: Apoplastic Barrier Formation In the Roots Of Mangroves: Is Tsupporting

confidence: 93%

Role of root hydrophobic barriers in salt exclusion of a mangrove plant Avicennia officinalis

Krishnamurthy

Jyothi-Prakash

Qin

et al. 2014

Plant Cell & Environment

113

View full text Add to dashboard Cite

Salt exclusion at the roots and salt secretion in the leaves were examined in a mangrove, Avicennia officinalis. The nonsecretor mangrove Bruguiera cylindrica was used for comparative study of hydrophobic barrier formation in the roots. Bypass flow was reduced when seedlings were previously treated with high salt concentration. A biseriate exodermis was detected in the salt-treated roots, along with an enhanced deposition of hydrophobic barriers in the endodermis. These barriers reduced Na + loading into the xylem, accounting for a 90-95% salt exclusion in A. officinalis. Prominent barriers were found in the roots of B. cylindrica even in the absence of salt treatment. A cytochrome P450 gene that may regulate suberin biosynthesis was up-regulated within hours of salt treatment in A. officinalis roots and leaves, corresponding with increased suberin deposition. X-ray microanalysis showed preferential deposition of Na + and Cl − in the root cortex compared with the stele, suggesting that the endodermis is the primary site of salt exclusion. Enhanced salt secretion and increased suberin deposition surrounding the salt glands were seen in the leaves with salt treatment. Overall, these data show that the deposition of apoplastic barriers increases resistance to bypass flow leading to efficient salt exclusion at the roots in mangroves.

show abstract

Section: Apoplastic Barrier Formation In the Roots Of Mangroves: Is Tsupporting

confidence: 93%

Role of root hydrophobic barriers in salt exclusion of a mangrove plant Avicennia officinalis

Krishnamurthy

Jyothi-Prakash

Qin

et al. 2014

Plant Cell & Environment

113

View full text Add to dashboard Cite

show abstract

“…The absorption bands at 1635, 1543, and 1247 cm -1 were attributed to amide I (antisymmetric stretching vibrations of carboxyl), amide II (N–H bending vibrations), and amide III (C–N stretching and N–H bending vibrations) ( Cai et al, 2014 ; Wang et al, 2015 ). The peak near 1417 cm -1 was assigned to symmetric -COO- stretching ( Wang and Nielsen, 1992 ); the peaks at 1543, 1370, and 1318 cm -1 were assigned to the CH 2 stretch of cellulose ( Cai et al, 2014 ; Lv et al, 2016 ); and the 897 cm -1 peak was assigned to the β-anomeric bond of cellulose ( Kačuráková et al, 2000 ; Zhong et al, 2011 ). The peaks at 1150 and 1031 cm -1 were assigned to C–O–C stretching or the skeletal vibration of lipids or cellulose and C–OH bending vibrations in carbohydrates, respectively ( Kačuráková et al, 2000 ; Cai et al, 2014 ).…”

Section: Resultsmentioning

confidence: 99%

“…The peak near 1417 cm -1 was assigned to symmetric -COO- stretching ( Wang and Nielsen, 1992 ); the peaks at 1543, 1370, and 1318 cm -1 were assigned to the CH 2 stretch of cellulose ( Cai et al, 2014 ; Lv et al, 2016 ); and the 897 cm -1 peak was assigned to the β-anomeric bond of cellulose ( Kačuráková et al, 2000 ; Zhong et al, 2011 ). The peaks at 1150 and 1031 cm -1 were assigned to C–O–C stretching or the skeletal vibration of lipids or cellulose and C–OH bending vibrations in carbohydrates, respectively ( Kačuráková et al, 2000 ; Cai et al, 2014 ). No obvious differences in the locations of the absorption peaks were observed between the spectra of indica and japonica .…”

Section: Resultsmentioning

confidence: 99%

Effects of Surface Charge and Functional Groups on the Adsorption and Binding Forms of Cu and Cd on Roots of indica and japonica Rice Cultivars

et al. 2017

View full text Add to dashboard Cite

This work was designed to understand the mechanisms of adsorption of copper (Cu) and cadmium (Cd) on roots of indica and japonica varieties of rice. Six varieties each of indica and japonica rice were grown in hydroponics and the chemical properties of the root surface were analyzed, including surface charges and functional groups (-COO- groups) as measured by the streaming potential and attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR). Binding forms of heavy metals adsorbed on rice roots were identified using sequential extraction methods. In rice roots exposed to Cu and Cd solutions, Cu existed mainly in both exchangeable and complexed forms, whereas Cd existed mainly in the exchangeable form. The amounts of exchangeable Cu and Cd and total adsorbed metal cations on the roots of indica varieties were significantly greater than those on the roots of japonica varieties, and the higher negative charges and the larger number of functional groups on the roots of indica varieties were responsible for their higher adsorption capacity and greater binding strength for Cu and Cd. Surface charge and functional groups on roots play an important role in the adsorption of Cu and Cd on the rice roots.

show abstract

“…, 2012). Cai et al. (2011) have reported that the development of CSs on the endodermis and exodermis in salt‐ and drought‐resistant Liaohan 109 rice plants occurs at an earlier stage than the moderately salt‐sensitive Tianfeng 202 or salt‐sensitive Nipponbare cultivars.…”

Section: Discussionmentioning

confidence: 99%

“…The main function of the endodermal CSs is to inhibit water and salt transport into the stele by blocking the selective apoplastic bypass in the root (Ma and Peterson, 2003), whereas the exodermal CSs blocks apoplastic transport at the root surface (Baxter et al, 2009;Takehisa et al, 2012). Cai et al (2011) have reported that the development of CSs on the endodermis and exodermis in saltand drought-resistant Liaohan 109 rice plants occurs at an earlier stage than the moderately salt-sensitive Tianfeng 202 or salt-sensitive Nipponbare cultivars. The group also reported that even without salt in the nutrient solution, the development of CSs in Liaohan 109 occurs earlier and at an increased level.…”

Section: O-methyltransferase Os09g0344500mentioning

confidence: 99%

The overexpression ofOsNAC9alters the root architecture of rice plants enhancing drought resistance and grain yield under field conditions

Redillas

Jeong

Kim

et al. 2012

Plant Biotechnology Journal

284

160

View full text Add to dashboard Cite

SummaryDrought conditions limit agricultural production by preventing crops from reaching their genetically predetermined maximum yields. Here, we present the results of field evaluations of rice overexpressing OsNAC9, a member of the rice NAC domain family. Root-specific (RCc3) and constitutive (GOS2) promoters were used to overexpress OsNAC9 and produced the transgenic RCc3:OsNAC9 and GOS2:OsNAC9 plants. Field evaluations over two cultivating seasons showed that grain yields of the RCc3:OsNAC9 and the GOS2:OsNAC9 plants were increased by 13%-18% and 13%-32% under normal conditions, respectively. Under drought conditions, RCc3:OsNAC9 plants showed an increased grain yield of 28%-72%, whilst the GOS2:OsNAC9 plants remained unchanged. Both transgenic lines exhibited altered root architecture involving an enlarged stele and aerenchyma. The aerenchyma of RCc3:OsNAC9 roots was enlarged to a greater extent than those of GOS2:OsNAC9 and non-transgenic (NT) roots, suggesting the importance of this phenotype for enhanced drought resistance. Microarray experiments identified 40 up-regulated genes by more than threefold (P < 0.01) in the roots of both transgenic lines. These included 9-cis-epoxycarotenoid dioxygenase, an ABA biosynthesis gene, calcium-transporting ATPase, a component of the Ca 2+ signalling pathway involved in cortical cell death and aerenchyma formation, cinnamoyl CoA reductase 1, a gene involved in lignin biosynthesis, and wall-associated kinases¸genes involved in cell elongation and morphogenesis. Interestingly, O-methyltransferase, a gene necessary for barrier formation, was specifically up-regulated only in the RCc3:OsNAC9 roots. Such up-regulated genes that are commonly and specifically up-regulated in OsNAC9 transgenic roots may account for the altered root architecture conferring increased drought resistance phenotype.

show abstract

Development of Casparian strip in rice cultivars

Cited by 6 publications

References 0 publications

Role of root hydrophobic barriers in salt exclusion of a mangrove plant Avicennia officinalis

Role of root hydrophobic barriers in salt exclusion of a mangrove plant Avicennia officinalis

Effects of Surface Charge and Functional Groups on the Adsorption and Binding Forms of Cu and Cd on Roots of indica and japonica Rice Cultivars

The overexpression ofOsNAC9alters the root architecture of rice plants enhancing drought resistance and grain yield under field conditions

Contact Info

Product

Resources

About